Merge branch 'catchorg:devel' into devel

CMake/CatchConfigOptions.cmake

@@ -68,7 +68,11 @@ set(_OtherConfigOptions
 foreach(OptionName ${_OtherConfigOptions})
   AddConfigOption(${OptionName})
 endforeach()
+if(DEFINED BUILD_SHARED_LIBS)
     set(CATCH_CONFIG_SHARED_LIBRARY ${BUILD_SHARED_LIBS})
+else()
+    set(CATCH_CONFIG_SHARED_LIBRARY "")
+endif()
 
 set(CATCH_CONFIG_DEFAULT_REPORTER "console" CACHE STRING "Read docs/configuration.md for details. The name of the reporter should be without quotes.")
 set(CATCH_CONFIG_CONSOLE_WIDTH "80" CACHE STRING "Read docs/configuration.md for details. Must form a valid integer literal.")

CMake/CatchMiscFunctions.cmake

@@ -74,6 +74,7 @@ function(add_warnings_to_targets targets)
           "-Woverloaded-virtual"
           "-Wparentheses"
           "-Wpedantic"
+          "-Wredundant-decls"
           "-Wreorder"
           "-Wreturn-std-move"
           "-Wshadow"
@@ -83,7 +84,7 @@ function(add_warnings_to_targets targets)
           "-Wundef"
           "-Wuninitialized"
           "-Wunneeded-internal-declaration"
-          "-Wunreachable-code"
+          "-Wunreachable-code-aggressive"
           "-Wunused"
           "-Wunused-function"
           "-Wunused-parameter"

docs/cmake-integration.md

@@ -126,6 +126,7 @@ catch_discover_tests(target
                      [OUTPUT_DIR dir]
                      [OUTPUT_PREFIX prefix]
                      [OUTPUT_SUFFIX suffix]
+                     [DISCOVERY_MODE <POST_BUILD|PRE_TEST>]
 )
 ```
 
@@ -198,6 +199,16 @@ If specified, `suffix` is added to each output file name, like so
 `--out dir/<test_name>suffix`. This can be used to add a file extension to
 the output file name e.g. ".xml".
 
+* `DISCOVERY_MODE mode`
+
+If specified allows control over when test discovery is performed.
+For a value of `POST_BUILD` (default) test discovery is performed at build time.
+For a a value of `PRE_TEST` test discovery is delayed until just prior to test
+execution (useful e.g. in cross-compilation environments).
+``DISCOVERY_MODE`` defaults to the value of the
+``CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE`` variable if it is not passed when
+calling ``catch_discover_tests``. This provides a mechanism for globally
+selecting a preferred test discovery behavior.
 
 ### `ParseAndAddCatchTests.cmake`
 

docs/faq.md

@@ -28,7 +28,7 @@ depending on how often the cleanup needs to happen.
 ## Why cannot I derive from the built-in reporters?
 
 They are not made to be overridden, in that we do not attempt to maintain
-a consistent internal state if a member function is overriden, and by
+a consistent internal state if a member function is overridden, and by
 forbidding users from using them as a base class, we can refactor them
 as needed later.
 

docs/generators.md

@@ -134,7 +134,7 @@ type, making their usage much nicer. These are
 * `map<T>(func, GeneratorWrapper<U>&&)` for `MapGenerator<T, U, Func>` (map `U` to `T`)
 * `chunk(chunk-size, GeneratorWrapper<T>&&)` for `ChunkGenerator<T>`
 * `random(IntegerOrFloat a, IntegerOrFloat b)` for `RandomIntegerGenerator` or `RandomFloatGenerator`
-* `range(Arithemtic start, Arithmetic end)` for `RangeGenerator<Arithmetic>` with a step size of `1`
+* `range(Arithmetic start, Arithmetic end)` for `RangeGenerator<Arithmetic>` with a step size of `1`
 * `range(Arithmetic start, Arithmetic end, Arithmetic step)` for `RangeGenerator<Arithmetic>` with a custom step size
 * `from_range(InputIterator from, InputIterator to)` for `IteratorGenerator<T>`
 * `from_range(Container const&)` for `IteratorGenerator<T>`

docs/opensource-users.md

@@ -95,6 +95,9 @@ A C++ client library for Consul. Consul is a distributed tool for discovering an
 ### [Reactive-Extensions/ RxCpp](https://github.com/Reactive-Extensions/RxCpp)
 A library of algorithms for values-distributed-in-time.
 
+### [SFML](https://github.com/SFML/SFML)
+Simple and Fast Multimedia Library.
+
 ### [SOCI](https://github.com/SOCI/soci)
 The C++ Database Access Library.
 
@@ -143,7 +146,7 @@ Newsbeuter is an open-source RSS/Atom feed reader for text terminals.
 A 2D, Zombie, RPG game which is being made on our own engine.
 
 ### [raspigcd](https://github.com/pantadeusz/raspigcd)
-Low level CLI app and library for execution of GCODE on Raspberry Pi without any additional microcontrolers (just RPi + Stepsticks).
+Low level CLI app and library for execution of GCODE on Raspberry Pi without any additional microcontrollers (just RPi + Stepsticks).
 
 ### [SpECTRE](https://github.com/sxs-collaboration/spectre)
 SpECTRE is a code for multi-scale, multi-physics problems in astrophysics and gravitational physics.

docs/release-notes.md

@@ -149,7 +149,7 @@
 
 ### Fixes
 * Cleaned out some warnings and static analysis issues
-  * Suppressed `-Wcomma` warning rarely occuring in templated test cases (#2543)
+  * Suppressed `-Wcomma` warning rarely occurring in templated test cases (#2543)
   * Constified implementation details in `INFO` (#2564)
   * Made `MatcherGenericBase` copy constructor const (#2566)
 * Fixed serialization of test filters so the output roundtrips
@@ -517,7 +517,7 @@ v3 releases.
   * The `SECTION`(s) before the `GENERATE` will not be run multiple times, the following ones will.
 * Added `-D`/`--min-duration` command line flag (#1910)
   * If a test takes longer to finish than the provided value, its name and duration will be printed.
-  * This flag is overriden by setting `-d`/`--duration`.
+  * This flag is overridden by setting `-d`/`--duration`.
 
 ### Fixes
 * `TAPReporter` no longer skips successful assertions (#1983)
@@ -585,7 +585,7 @@ v3 releases.
 ### Fixes
 * Fixed computation of benchmarking column widths in ConsoleReporter (#1885, #1886)
 * Suppressed clang-tidy's `cppcoreguidelines-pro-type-vararg` in assertions (#1901)
-  * It was a false positive trigered by the new warning support workaround
+  * It was a false positive triggered by the new warning support workaround
 * Fixed bug in test specification parser handling of OR'd patterns using escaping (#1905)
 
 ### Miscellaneous
@@ -922,7 +922,7 @@ v3 releases.
 
 ### Contrib
 * `ParseAndAddCatchTests` has learned how to use `DISABLED` CTest property (#1452)
-* `ParseAndAddCatchTests` now works when there is a whitspace before the test name (#1493)
+* `ParseAndAddCatchTests` now works when there is a whitespace before the test name (#1493)
 
 
 ### Miscellaneous

docs/reporter-events.md

@@ -96,12 +96,12 @@ void assertionStarting( AssertionInfo const& assertionInfo );
 void assertionEnded( AssertionStats const& assertionStats );
 ```
 
-`assertionStarting` is called after the expression is captured, but before
+The `assertionStarting` event is emitted before the expression in the
-the assertion expression is evaluated. This might seem like a minor
+assertion is captured or evaluated and `assertionEnded` is emitted
-distinction, but what it means is that if you have assertion like
+afterwards. This means that given assertion like `REQUIRE(a + b == c + d)`,
-`REQUIRE( a + b == c + d )`, then what happens is that `a + b` and `c + d`
+Catch2 first emits `assertionStarting` event, then `a + b` and `c + d`
-are evaluated before `assertionStarting` is emitted, while the `==` is
+are evaluated, then their results are captured, the comparison is evaluated,
-evaluated after the event.
+and then `assertionEnded` event is emitted.
 
 
 ## Benchmarking events

examples/302-Gen-Table.cpp

@@ -44,11 +44,11 @@ TEST_CASE("Table allows pre-computed test inputs and outputs", "[example][genera
 
 /* Possible simplifications where less legacy toolchain support is needed:
  *
- * - With libstdc++6 or newer, the make_tuple() calls can be ommitted
+ * - With libstdc++6 or newer, the make_tuple() calls can be omitted
  * (technically C++17 but does not require -std in GCC/Clang). See
  *   https://stackoverflow.com/questions/12436586/tuple-vector-and-initializer-list
  *
- * - In C++17 mode std::tie() and the preceding variable delcarations can be
+ * - In C++17 mode std::tie() and the preceding variable declarations can be
  * replaced by structured bindings: auto [test_input, expected] = GENERATE(
  * table<std::string, size_t>({ ...
  */

extras/Catch.cmake

@@ -37,6 +37,7 @@ same as the Catch name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
                          [OUTPUT_DIR dir]
                          [OUTPUT_PREFIX prefix]
                          [OUTPUT_SUFFIX suffix]
+                         [DISCOVERY_MODE <POST_BUILD|PRE_TEST>]
     )
 
   ``catch_discover_tests`` sets up a post-build command on the test executable
@@ -123,14 +124,28 @@ same as the Catch name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
     test executable and when the tests are executed themselves. This requires
     cmake/ctest >= 3.22.
 
+  `DISCOVERY_MODE mode``
+    Provides control over when ``catch_discover_tests`` performs test discovery.
+    By default, ``POST_BUILD`` sets up a post-build command to perform test discovery
+    at build time. In certain scenarios, like cross-compiling, this ``POST_BUILD``
+    behavior is not desirable. By contrast, ``PRE_TEST`` delays test discovery until
+    just prior to test execution. This way test discovery occurs in the target environment
+    where the test has a better chance at finding appropriate runtime dependencies.
+
+    ``DISCOVERY_MODE`` defaults to the value of the
+    ``CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE`` variable if it is not passed when
+    calling ``catch_discover_tests``. This provides a mechanism for globally selecting
+    a preferred test discovery behavior without having to modify each call site.
+
 #]=======================================================================]
 
 #------------------------------------------------------------------------------
 function(catch_discover_tests TARGET)
+
   cmake_parse_arguments(
     ""
     ""
-    "TEST_PREFIX;TEST_SUFFIX;WORKING_DIRECTORY;TEST_LIST;REPORTER;OUTPUT_DIR;OUTPUT_PREFIX;OUTPUT_SUFFIX"
+    "TEST_PREFIX;TEST_SUFFIX;WORKING_DIRECTORY;TEST_LIST;REPORTER;OUTPUT_DIR;OUTPUT_PREFIX;OUTPUT_SUFFIX;DISCOVERY_MODE"
     "TEST_SPEC;EXTRA_ARGS;PROPERTIES;DL_PATHS"
     ${ARGN}
   )
@@ -141,12 +156,20 @@ function(catch_discover_tests TARGET)
   if(NOT _TEST_LIST)
     set(_TEST_LIST ${TARGET}_TESTS)
   endif()
-
   if (_DL_PATHS)
     if(${CMAKE_VERSION} VERSION_LESS "3.22.0")
         message(FATAL_ERROR "The DL_PATHS option requires at least cmake 3.22")
     endif()
   endif()
+  if(NOT _DISCOVERY_MODE)
+    if(NOT CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE)
+      set(CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE "POST_BUILD")
+    endif()
+    set(_DISCOVERY_MODE ${CMAKE_CATCH_DISCOVER_TESTS_DISCOVERY_MODE})
+  endif()
+  if (NOT _DISCOVERY_MODE MATCHES "^(POST_BUILD|PRE_TEST)$")
+    message(FATAL_ERROR "Unknown DISCOVERY_MODE: ${_DISCOVERY_MODE}")
+  endif()
 
   ## Generate a unique name based on the extra arguments
   string(SHA1 args_hash "${_TEST_SPEC} ${_EXTRA_ARGS} ${_REPORTER} ${_OUTPUT_DIR} ${_OUTPUT_PREFIX} ${_OUTPUT_SUFFIX}")
@@ -159,6 +182,8 @@ function(catch_discover_tests TARGET)
     TARGET ${TARGET}
     PROPERTY CROSSCOMPILING_EMULATOR
   )
+
+  if(_DISCOVERY_MODE STREQUAL "POST_BUILD")
     add_custom_command(
       TARGET ${TARGET} POST_BUILD
       BYPRODUCTS "${ctest_tests_file}"
@@ -191,6 +216,42 @@ function(catch_discover_tests TARGET)
       "endif()\n"
     )
 
+  elseif(_DISCOVERY_MODE STREQUAL "PRE_TEST")
+
+    string(CONCAT ctest_include_content
+      "if(EXISTS \"$<TARGET_FILE:${TARGET}>\")"                                    "\n"
+      "  if(NOT EXISTS \"${ctest_tests_file}\" OR"                                 "\n"
+      "     NOT \"${ctest_tests_file}\" IS_NEWER_THAN \"$<TARGET_FILE:${TARGET}>\" OR\n"
+      "     NOT \"${ctest_tests_file}\" IS_NEWER_THAN \"\${CMAKE_CURRENT_LIST_FILE}\")\n"
+      "    include(\"${_CATCH_DISCOVER_TESTS_SCRIPT}\")"                           "\n"
+      "    catch_discover_tests_impl("                                             "\n"
+      "      TEST_EXECUTABLE"        " [==[" "$<TARGET_FILE:${TARGET}>"   "]==]"   "\n"
+      "      TEST_EXECUTOR"          " [==[" "${crosscompiling_emulator}" "]==]"   "\n"
+      "      TEST_WORKING_DIR"       " [==[" "${_WORKING_DIRECTORY}"      "]==]"   "\n"
+      "      TEST_SPEC"              " [==[" "${_TEST_SPEC}"              "]==]"   "\n"
+      "      TEST_EXTRA_ARGS"        " [==[" "${_EXTRA_ARGS}"             "]==]"   "\n"
+      "      TEST_PROPERTIES"        " [==[" "${_PROPERTIES}"             "]==]"   "\n"
+      "      TEST_PREFIX"            " [==[" "${_TEST_PREFIX}"            "]==]"   "\n"
+      "      TEST_SUFFIX"            " [==[" "${_TEST_SUFFIX}"            "]==]"   "\n"
+      "      TEST_LIST"              " [==[" "${_TEST_LIST}"              "]==]"   "\n"
+      "      TEST_REPORTER"          " [==[" "${_REPORTER}"               "]==]"   "\n"
+      "      TEST_OUTPUT_DIR"        " [==[" "${_OUTPUT_DIR}"             "]==]"   "\n"
+      "      TEST_OUTPUT_PREFIX"     " [==[" "${_OUTPUT_PREFIX}"          "]==]"   "\n"
+      "      TEST_OUTPUT_SUFFIX"     " [==[" "${_OUTPUT_SUFFIX}"          "]==]"   "\n"
+      "      CTEST_FILE"             " [==[" "${ctest_tests_file}"        "]==]"   "\n"
+      "      TEST_DL_PATHS"          " [==[" "${_DL_PATHS}"               "]==]"   "\n"
+      "      CTEST_FILE"             " [==[" "${CTEST_FILE}"              "]==]"   "\n"
+      "    )"                                                                      "\n"
+      "  endif()"                                                                  "\n"
+      "  include(\"${ctest_tests_file}\")"                                         "\n"
+      "else()"                                                                     "\n"
+      "  add_test(${TARGET}_NOT_BUILT ${TARGET}_NOT_BUILT)"                        "\n"
+      "endif()"                                                                    "\n"
+    )
+
+    file(GENERATE OUTPUT "${ctest_include_file}" CONTENT "${ctest_include_content}")
+  endif()
+
   if(NOT ${CMAKE_VERSION} VERSION_LESS "3.10.0")
     # Add discovered tests to directory TEST_INCLUDE_FILES
     set_property(DIRECTORY
@@ -204,9 +265,7 @@ function(catch_discover_tests TARGET)
         PROPERTY TEST_INCLUDE_FILE "${ctest_include_file}"
       )
     else()
-      message(FATAL_ERROR
+      message(FATAL_ERROR "Cannot set more than one TEST_INCLUDE_FILE")
-        "Cannot set more than one TEST_INCLUDE_FILE"
-      )
     endif()
   endif()
 

extras/CatchAddTests.cmake

@@ -1,28 +1,6 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
-set(prefix "${TEST_PREFIX}")
-set(suffix "${TEST_SUFFIX}")
-set(spec ${TEST_SPEC})
-set(extra_args ${TEST_EXTRA_ARGS})
-set(properties ${TEST_PROPERTIES})
-set(reporter ${TEST_REPORTER})
-set(output_dir ${TEST_OUTPUT_DIR})
-set(output_prefix ${TEST_OUTPUT_PREFIX})
-set(output_suffix ${TEST_OUTPUT_SUFFIX})
-set(dl_paths ${TEST_DL_PATHS})
-set(script)
-set(suite)
-set(tests)
-
-if(WIN32)
-  set(dl_paths_variable_name PATH)
-elseif(APPLE)
-  set(dl_paths_variable_name DYLD_LIBRARY_PATH)
-else()
-  set(dl_paths_variable_name LD_LIBRARY_PATH)
-endif()
-
 function(add_command NAME)
   set(_args "")
   # use ARGV* instead of ARGN, because ARGN splits arrays into multiple arguments
@@ -38,10 +16,42 @@ function(add_command NAME)
   set(script "${script}${NAME}(${_args})\n" PARENT_SCOPE)
 endfunction()
 
+function(catch_discover_tests_impl)
+
+  cmake_parse_arguments(
+    ""
+    ""
+    "TEST_EXECUTABLE;TEST_WORKING_DIR;TEST_DL_PATHS;TEST_OUTPUT_DIR;TEST_OUTPUT_PREFIX;TEST_OUTPUT_SUFFIX;TEST_PREFIX;TEST_REPORTER;TEST_SPEC;TEST_SUFFIX;TEST_LIST;CTEST_FILE"
+    "TEST_EXTRA_ARGS;TEST_PROPERTIES;TEST_EXECUTOR"
+    ${ARGN}
+  )
+
+  set(prefix "${_TEST_PREFIX}")
+  set(suffix "${_TEST_SUFFIX}")
+  set(spec ${_TEST_SPEC})
+  set(extra_args ${_TEST_EXTRA_ARGS})
+  set(properties ${_TEST_PROPERTIES})
+  set(reporter ${_TEST_REPORTER})
+  set(output_dir ${_TEST_OUTPUT_DIR})
+  set(output_prefix ${_TEST_OUTPUT_PREFIX})
+  set(output_suffix ${_TEST_OUTPUT_SUFFIX})
+  set(dl_paths ${_TEST_DL_PATHS})
+  set(script)
+  set(suite)
+  set(tests)
+
+  if(WIN32)
+    set(dl_paths_variable_name PATH)
+  elseif(APPLE)
+    set(dl_paths_variable_name DYLD_LIBRARY_PATH)
+  else()
+    set(dl_paths_variable_name LD_LIBRARY_PATH)
+  endif()
+
   # Run test executable to get list of available tests
-if(NOT EXISTS "${TEST_EXECUTABLE}")
+  if(NOT EXISTS "${_TEST_EXECUTABLE}")
     message(FATAL_ERROR
-    "Specified test executable '${TEST_EXECUTABLE}' does not exist"
+      "Specified test executable '${_TEST_EXECUTABLE}' does not exist"
     )
   endif()
 
@@ -51,14 +61,14 @@ if(dl_paths)
   endif()
 
   execute_process(
-  COMMAND ${TEST_EXECUTOR} "${TEST_EXECUTABLE}" ${spec} --list-tests --verbosity quiet
+    COMMAND ${_TEST_EXECUTOR} "${_TEST_EXECUTABLE}" ${spec} --list-tests --verbosity quiet
     OUTPUT_VARIABLE output
     RESULT_VARIABLE result
-  WORKING_DIRECTORY "${TEST_WORKING_DIR}"
+    WORKING_DIRECTORY "${_TEST_WORKING_DIR}"
   )
   if(NOT ${result} EQUAL 0)
     message(FATAL_ERROR
-    "Error running test executable '${TEST_EXECUTABLE}':\n"
+      "Error running test executable '${_TEST_EXECUTABLE}':\n"
       "  Result: ${result}\n"
       "  Output: ${output}\n"
     )
@@ -94,7 +104,7 @@ endif()
 
   # Prepare output dir
   if(output_dir AND NOT IS_ABSOLUTE ${output_dir})
-  set(output_dir "${TEST_WORKING_DIR}/${output_dir}")
+    set(output_dir "${_TEST_WORKING_DIR}/${output_dir}")
     if(NOT EXISTS ${output_dir})
       file(MAKE_DIRECTORY ${output_dir})
     endif()
@@ -124,8 +134,8 @@ foreach(line ${output})
     # ...and add to script
     add_command(add_test
       "${prefix}${test}${suffix}"
-    ${TEST_EXECUTOR}
+      ${_TEST_EXECUTOR}
-    "${TEST_EXECUTABLE}"
+      "${_TEST_EXECUTABLE}"
       "${test_name}"
       ${extra_args}
       "${reporter_arg}"
@@ -134,7 +144,7 @@ foreach(line ${output})
     add_command(set_tests_properties
       "${prefix}${test}${suffix}"
       PROPERTIES
-    WORKING_DIRECTORY "${TEST_WORKING_DIR}"
+      WORKING_DIRECTORY "${_TEST_WORKING_DIR}"
       ${properties}
     )
 
@@ -150,7 +160,28 @@ endforeach()
 
   # Create a list of all discovered tests, which users may use to e.g. set
   # properties on the tests
-add_command(set ${TEST_LIST} ${tests})
+  add_command(set ${_TEST_LIST} ${tests})
 
   # Write CTest script
-file(WRITE "${CTEST_FILE}" "${script}")
+  file(WRITE "${_CTEST_FILE}" "${script}")
+endfunction()
+
+if(CMAKE_SCRIPT_MODE_FILE)
+  catch_discover_tests_impl(
+    TEST_EXECUTABLE ${TEST_EXECUTABLE}
+    TEST_EXECUTOR ${TEST_EXECUTOR}
+    TEST_WORKING_DIR ${TEST_WORKING_DIR}
+    TEST_SPEC ${TEST_SPEC}
+    TEST_EXTRA_ARGS ${TEST_EXTRA_ARGS}
+    TEST_PROPERTIES ${TEST_PROPERTIES}
+    TEST_PREFIX ${TEST_PREFIX}
+    TEST_SUFFIX ${TEST_SUFFIX}
+    TEST_LIST ${TEST_LIST}
+    TEST_REPORTER ${TEST_REPORTER}
+    TEST_OUTPUT_DIR ${TEST_OUTPUT_DIR}
+    TEST_OUTPUT_PREFIX ${TEST_OUTPUT_PREFIX}
+    TEST_OUTPUT_SUFFIX ${TEST_OUTPUT_SUFFIX}
+    TEST_DL_PATHS ${TEST_DL_PATHS}
+    CTEST_FILE ${CTEST_FILE}
+  )
+endif()

meson.build

@@ -10,8 +10,10 @@ project(
   'cpp',
   version: '3.3.2', # CML version placeholder, don't delete
   license: 'BSL-1.0',
-  meson_version: '>=0.50.0',
+  meson_version: '>=0.54.1',
 )
 
 subdir('src/catch2')
+if get_option('tests')
   subdir('tests')
+endif

meson_options.txt

@@ -0,0 +1 @@
+option('tests', type: 'boolean', value: true, description: 'Build the unit tests')

src/catch2/benchmark/catch_benchmark.hpp

@@ -30,6 +30,7 @@
 
 #include <algorithm>
 #include <chrono>
+#include <exception>
 #include <functional>
 #include <string>
 #include <vector>

src/catch2/benchmark/catch_execution_plan.hpp

@@ -17,8 +17,7 @@
 #include <catch2/benchmark/detail/catch_repeat.hpp>
 #include <catch2/benchmark/detail/catch_run_for_at_least.hpp>
 
-#include <algorithm>
+#include <vector>
-#include <iterator>
 
 namespace Catch {
     namespace Benchmark {
@@ -41,14 +40,17 @@ namespace Catch {
                 Detail::run_for_at_least<Clock>(std::chrono::duration_cast<ClockDuration<Clock>>(warmup_time), warmup_iterations, Detail::repeat(now<Clock>{}));
 
                 std::vector<FloatDuration<Clock>> times;
-                times.reserve(cfg.benchmarkSamples());
+                const auto num_samples = cfg.benchmarkSamples();
-                std::generate_n(std::back_inserter(times), cfg.benchmarkSamples(), [this, env] {
+                times.reserve( num_samples );
+                for ( size_t i = 0; i < num_samples; ++i ) {
                     Detail::ChronometerModel<Clock> model;
                     this->benchmark( Chronometer( model, iterations_per_sample ) );
                     auto sample_time = model.elapsed() - env.clock_cost.mean;
-                    if (sample_time < FloatDuration<Clock>::zero()) sample_time = FloatDuration<Clock>::zero();
+                    if ( sample_time < FloatDuration<Clock>::zero() ) {
-                    return sample_time / iterations_per_sample;
+                        sample_time = FloatDuration<Clock>::zero();
-                });
+                    }
+                    times.push_back(sample_time / iterations_per_sample);
+                }
                 return times;
             }
         };

src/catch2/benchmark/catch_sample_analysis.hpp

@@ -10,14 +10,11 @@
 #ifndef CATCH_SAMPLE_ANALYSIS_HPP_INCLUDED
 #define CATCH_SAMPLE_ANALYSIS_HPP_INCLUDED
 
-#include <catch2/benchmark/catch_clock.hpp>
 #include <catch2/benchmark/catch_estimate.hpp>
 #include <catch2/benchmark/catch_outlier_classification.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
-#include <algorithm>
 #include <vector>
-#include <iterator>
 
 namespace Catch {
     namespace Benchmark {
@@ -33,7 +30,9 @@ namespace Catch {
             operator SampleAnalysis<Duration2>() const {
                 std::vector<Duration2> samples2;
                 samples2.reserve(samples.size());
-                std::transform(samples.begin(), samples.end(), std::back_inserter(samples2), [](Duration d) { return Duration2(d); });
+                for (auto const& d : samples) {
+                    samples2.push_back(Duration2(d));
+                }
                 return {
                     CATCH_MOVE(samples2),
                     mean,

src/catch2/benchmark/detail/catch_analyse.hpp

@@ -16,8 +16,6 @@
 #include <catch2/interfaces/catch_interfaces_config.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
-#include <algorithm>
-#include <iterator>
 #include <vector>
 
 namespace Catch {
@@ -28,7 +26,9 @@ namespace Catch {
                 if (!cfg.benchmarkNoAnalysis()) {
                     std::vector<double> samples;
                     samples.reserve(static_cast<size_t>(last - first));
-                    std::transform(first, last, std::back_inserter(samples), [](Duration d) { return d.count(); });
+                    for (auto current = first; current != last; ++current) {
+                        samples.push_back( current->count() );
+                    }
 
                     auto analysis = Catch::Benchmark::Detail::analyse_samples(cfg.benchmarkConfidenceInterval(), cfg.benchmarkResamples(), samples.begin(), samples.end());
                     auto outliers = Catch::Benchmark::Detail::classify_outliers(samples.begin(), samples.end());
@@ -43,7 +43,10 @@ namespace Catch {
                     };
                     std::vector<Duration> samples2;
                     samples2.reserve(samples.size());
-                    std::transform(samples.begin(), samples.end(), std::back_inserter(samples2), [](double d) { return Duration(d); });
+                    for (auto s : samples) {
+                        samples2.push_back( Duration( s ) );
+                    }
+
                     return {
                         CATCH_MOVE(samples2),
                         wrap_estimate(analysis.mean),

src/catch2/benchmark/detail/catch_estimate_clock.hpp

@@ -19,7 +19,6 @@
 #include <catch2/internal/catch_unique_ptr.hpp>
 
 #include <algorithm>
-#include <iterator>
 #include <vector>
 #include <cmath>
 
@@ -30,26 +29,29 @@ namespace Catch {
             std::vector<double> resolution(int k) {
                 std::vector<TimePoint<Clock>> times;
                 times.reserve(static_cast<size_t>(k + 1));
-                std::generate_n(std::back_inserter(times), k + 1, now<Clock>{});
+                for ( int i = 0; i < k + 1; ++i ) {
+                    times.push_back( Clock::now() );
+                }
 
                 std::vector<double> deltas;
                 deltas.reserve(static_cast<size_t>(k));
-                std::transform(std::next(times.begin()), times.end(), times.begin(),
+                for ( size_t idx = 1; idx < times.size(); ++idx ) {
-                    std::back_inserter(deltas),
+                    deltas.push_back( static_cast<double>(
-                    [](TimePoint<Clock> a, TimePoint<Clock> b) { return static_cast<double>((a - b).count()); });
+                        ( times[idx] - times[idx - 1] ).count() ) );
+                }
 
                 return deltas;
             }
 
-            const auto warmup_iterations = 10000;
+            constexpr auto warmup_iterations = 10000;
-            const auto warmup_time = std::chrono::milliseconds(100);
+            constexpr auto warmup_time = std::chrono::milliseconds(100);
-            const auto minimum_ticks = 1000;
+            constexpr auto minimum_ticks = 1000;
-            const auto warmup_seed = 10000;
+            constexpr auto warmup_seed = 10000;
-            const auto clock_resolution_estimation_time = std::chrono::milliseconds(500);
+            constexpr auto clock_resolution_estimation_time = std::chrono::milliseconds(500);
-            const auto clock_cost_estimation_time_limit = std::chrono::seconds(1);
+            constexpr auto clock_cost_estimation_time_limit = std::chrono::seconds(1);
-            const auto clock_cost_estimation_tick_limit = 100000;
+            constexpr auto clock_cost_estimation_tick_limit = 100000;
-            const auto clock_cost_estimation_time = std::chrono::milliseconds(10);
+            constexpr auto clock_cost_estimation_time = std::chrono::milliseconds(10);
-            const auto clock_cost_estimation_iterations = 10000;
+            constexpr auto clock_cost_estimation_iterations = 10000;
 
             template <typename Clock>
             int warmup() {
@@ -84,9 +86,11 @@ namespace Catch {
                 std::vector<double> times;
                 int nsamples = static_cast<int>(std::ceil(time_limit / r.elapsed));
                 times.reserve(static_cast<size_t>(nsamples));
-                std::generate_n(std::back_inserter(times), nsamples, [time_clock, &r] {
+                for ( int s = 0; s < nsamples; ++s ) {
-                    return static_cast<double>((time_clock(r.iterations) / r.iterations).count());
+                    times.push_back( static_cast<double>(
-                });
+                        ( time_clock( r.iterations ) / r.iterations )
+                            .count() ) );
+                }
                 return {
                     FloatDuration<Clock>(mean(times.begin(), times.end())),
                     classify_outliers(times.begin(), times.end()),

src/catch2/benchmark/detail/catch_stats.cpp

@@ -13,7 +13,7 @@
 
 #include <cassert>
 #include <cstddef>
-#include <iterator>
+#include <numeric>
 #include <random>
 
 
@@ -21,30 +21,79 @@
 #include <future>
 #endif
 
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
             namespace {
 
-using Catch::Benchmark::Detail::sample;
-
                 template <typename URng, typename Estimator>
-     sample resample(URng& rng, unsigned int resamples, std::vector<double>::iterator first, std::vector<double>::iterator last, Estimator& estimator) {
+                static sample
+                resample( URng& rng,
+                          unsigned int resamples,
+                          std::vector<double>::const_iterator first,
+                          std::vector<double>::const_iterator last,
+                          Estimator& estimator ) {
                     auto n = static_cast<size_t>( last - first );
-         std::uniform_int_distribution<decltype(n)> dist(0, n - 1);
+                    std::uniform_int_distribution<decltype( n )> dist( 0,
+                                                                       n - 1 );
 
                     sample out;
                     out.reserve( resamples );
-         std::generate_n(std::back_inserter(out), resamples, [n, first, &estimator, &dist, &rng] {
+                    // We allocate the vector outside the loop to avoid realloc
+                    // per resample
                     std::vector<double> resampled;
                     resampled.reserve( n );
-             std::generate_n(std::back_inserter(resampled), n, [first, &dist, &rng] { return first[static_cast<std::ptrdiff_t>(dist(rng))]; });
+                    for ( size_t i = 0; i < resamples; ++i ) {
-             return estimator(resampled.begin(), resampled.end());
+                        resampled.clear();
-         });
+                        for ( size_t s = 0; s < n; ++s ) {
+                            resampled.push_back(
+                                first[static_cast<std::ptrdiff_t>(
+                                    dist( rng ) )] );
+                        }
+                        const auto estimate =
+                            estimator( resampled.begin(), resampled.end() );
+                        out.push_back( estimate );
+                    }
                     std::sort( out.begin(), out.end() );
                     return out;
                 }
 
+                static double outlier_variance( Estimate<double> mean,
+                                                Estimate<double> stddev,
+                                                int n ) {
+                    double sb = stddev.point;
+                    double mn = mean.point / n;
+                    double mg_min = mn / 2.;
+                    double sg = (std::min)( mg_min / 4., sb / std::sqrt( n ) );
+                    double sg2 = sg * sg;
+                    double sb2 = sb * sb;
 
-    double erf_inv(double x) {
+                    auto c_max = [n, mn, sb2, sg2]( double x ) -> double {
-        // Code accompanying the article "Approximating the erfinv function" in GPU Computing Gems, Volume 2
+                        double k = mn - x;
+                        double d = k * k;
+                        double nd = n * d;
+                        double k0 = -n * nd;
+                        double k1 = sb2 - n * sg2 + nd;
+                        double det = k1 * k1 - 4 * sg2 * k0;
+                        return static_cast<int>( -2. * k0 /
+                                                 ( k1 + std::sqrt( det ) ) );
+                    };
+
+                    auto var_out = [n, sb2, sg2]( double c ) {
+                        double nc = n - c;
+                        return ( nc / n ) * ( sb2 - nc * sg2 );
+                    };
+
+                    return (std::min)( var_out( 1 ),
+                                       var_out(
+                                           (std::min)( c_max( 0. ),
+                                                       c_max( mg_min ) ) ) ) /
+                           sb2;
+                }
+
+                static double erf_inv( double x ) {
+                    // Code accompanying the article "Approximating the erfinv
+                    // function" in GPU Computing Gems, Volume 2
                     double w, p;
 
                     w = -log( ( 1.0 - x ) * ( 1.0 + x ) );
@@ -118,9 +167,12 @@ using Catch::Benchmark::Detail::sample;
                     return p * x;
                 }
 
-    double standard_deviation(std::vector<double>::iterator first, std::vector<double>::iterator last) {
+                static double
+                standard_deviation( std::vector<double>::const_iterator first,
+                                    std::vector<double>::const_iterator last ) {
                     auto m = Catch::Benchmark::Detail::mean( first, last );
-        double variance = std::accumulate( first,
+                    double variance =
+                        std::accumulate( first,
                                          last,
                                          0.,
                                          [m]( double a, double b ) {
@@ -131,7 +183,10 @@ using Catch::Benchmark::Detail::sample;
                     return std::sqrt( variance );
                 }
 
-}
+            } // namespace
+        }     // namespace Detail
+    }         // namespace Benchmark
+} // namespace Catch
 
 namespace Catch {
     namespace Benchmark {
@@ -161,6 +216,47 @@ namespace Catch {
                 return xj + g * (xj1 - xj);
             }
 
+            OutlierClassification
+            classify_outliers( std::vector<double>::const_iterator first,
+                               std::vector<double>::const_iterator last ) {
+                std::vector<double> copy( first, last );
+
+                auto q1 = weighted_average_quantile( 1, 4, copy.begin(), copy.end() );
+                auto q3 = weighted_average_quantile( 3, 4, copy.begin(), copy.end() );
+                auto iqr = q3 - q1;
+                auto los = q1 - ( iqr * 3. );
+                auto lom = q1 - ( iqr * 1.5 );
+                auto him = q3 + ( iqr * 1.5 );
+                auto his = q3 + ( iqr * 3. );
+
+                OutlierClassification o;
+                for ( ; first != last; ++first ) {
+                    const double t = *first;
+                    if ( t < los ) {
+                        ++o.low_severe;
+                    } else if ( t < lom ) {
+                        ++o.low_mild;
+                    } else if ( t > his ) {
+                        ++o.high_severe;
+                    } else if ( t > him ) {
+                        ++o.high_mild;
+                    }
+                    ++o.samples_seen;
+                }
+                return o;
+            }
+
+            double mean( std::vector<double>::const_iterator first,
+                         std::vector<double>::const_iterator last ) {
+                auto count = last - first;
+                double sum = 0.;
+                while (first != last) {
+                    sum += *first;
+                    ++first;
+                }
+                return sum / static_cast<double>(count);
+            }
+
 
             double erfc_inv(double x) {
                 return erf_inv(1.0 - x);
@@ -182,35 +278,10 @@ namespace Catch {
                 return result;
             }
 
-
+            bootstrap_analysis analyse_samples(double confidence_level,
-            double outlier_variance(Estimate<double> mean, Estimate<double> stddev, int n) {
+                                               unsigned int n_resamples,
-                double sb = stddev.point;
+                                               std::vector<double>::iterator first,
-                double mn = mean.point / n;
+                                               std::vector<double>::iterator last) {
-                double mg_min = mn / 2.;
-                double sg = (std::min)(mg_min / 4., sb / std::sqrt(n));
-                double sg2 = sg * sg;
-                double sb2 = sb * sb;
-
-                auto c_max = [n, mn, sb2, sg2](double x) -> double {
-                    double k = mn - x;
-                    double d = k * k;
-                    double nd = n * d;
-                    double k0 = -n * nd;
-                    double k1 = sb2 - n * sg2 + nd;
-                    double det = k1 * k1 - 4 * sg2 * k0;
-                    return static_cast<int>(-2. * k0 / (k1 + std::sqrt(det)));
-                };
-
-                auto var_out = [n, sb2, sg2](double c) {
-                    double nc = n - c;
-                    return (nc / n) * (sb2 - nc * sg2);
-                };
-
-                return (std::min)(var_out(1), var_out((std::min)(c_max(0.), c_max(mg_min)))) / sb2;
-            }
-
-
-            bootstrap_analysis analyse_samples(double confidence_level, unsigned int n_resamples, std::vector<double>::iterator first, std::vector<double>::iterator last) {
                 CATCH_INTERNAL_START_WARNINGS_SUPPRESSION
                 CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS
                 static std::random_device entropy;
@@ -218,11 +289,12 @@ namespace Catch {
 
                 auto n = static_cast<int>(last - first); // seriously, one can't use integral types without hell in C++
 
-                auto mean = &Detail::mean<std::vector<double>::iterator>;
+                auto mean = &Detail::mean;
                 auto stddev = &standard_deviation;
 
 #if defined(CATCH_CONFIG_USE_ASYNC)
-                auto Estimate = [=](double(*f)(std::vector<double>::iterator, std::vector<double>::iterator)) {
+                auto Estimate = [=](double(*f)(std::vector<double>::const_iterator,
+                                               std::vector<double>::const_iterator)) {
                     auto seed = entropy();
                     return std::async(std::launch::async, [=] {
                         std::mt19937 rng(seed);
@@ -237,7 +309,8 @@ namespace Catch {
                 auto mean_estimate = mean_future.get();
                 auto stddev_estimate = stddev_future.get();
 #else
-                auto Estimate = [=](double(*f)(std::vector<double>::iterator, std::vector<double>::iterator)) {
+                auto Estimate = [=](double(*f)(std::vector<double>::const_iterator,
+                                               std::vector<double>::const_iterator)) {
                     auto seed = entropy();
                     std::mt19937 rng(seed);
                     auto resampled = resample(rng, n_resamples, first, last, f);

src/catch2/benchmark/detail/catch_stats.hpp

@@ -15,8 +15,6 @@
 
 #include <algorithm>
 #include <vector>
-#include <numeric>
-#include <tuple>
 #include <cmath>
 
 namespace Catch {
@@ -30,39 +28,17 @@ namespace Catch {
 
             double weighted_average_quantile(int k, int q, std::vector<double>::iterator first, std::vector<double>::iterator last);
 
-            template <typename Iterator>
+            OutlierClassification
-            OutlierClassification classify_outliers(Iterator first, Iterator last) {
+            classify_outliers( std::vector<double>::const_iterator first,
-                std::vector<double> copy(first, last);
+                               std::vector<double>::const_iterator last );
 
-                auto q1 = weighted_average_quantile(1, 4, copy.begin(), copy.end());
+            double mean( std::vector<double>::const_iterator first,
-                auto q3 = weighted_average_quantile(3, 4, copy.begin(), copy.end());
+                         std::vector<double>::const_iterator last );
-                auto iqr = q3 - q1;
-                auto los = q1 - (iqr * 3.);
-                auto lom = q1 - (iqr * 1.5);
-                auto him = q3 + (iqr * 1.5);
-                auto his = q3 + (iqr * 3.);
 
-                OutlierClassification o;
+            template <typename Estimator>
-                for (; first != last; ++first) {
+            sample jackknife(Estimator&& estimator,
-                    auto&& t = *first;
+                             std::vector<double>::iterator first,
-                    if (t < los) ++o.low_severe;
+                             std::vector<double>::iterator last) {
-                    else if (t < lom) ++o.low_mild;
-                    else if (t > his) ++o.high_severe;
-                    else if (t > him) ++o.high_mild;
-                    ++o.samples_seen;
-                }
-                return o;
-            }
-
-            template <typename Iterator>
-            double mean(Iterator first, Iterator last) {
-                auto count = last - first;
-                double sum = std::accumulate(first, last, 0.);
-                return sum / static_cast<double>(count);
-            }
-
-            template <typename Estimator, typename Iterator>
-            sample jackknife(Estimator&& estimator, Iterator first, Iterator last) {
                 auto n = static_cast<size_t>(last - first);
                 auto second = first;
                 ++second;
@@ -85,8 +61,12 @@ namespace Catch {
 
             double normal_quantile(double p);
 
-            template <typename Iterator, typename Estimator>
+            template <typename Estimator>
-            Estimate<double> bootstrap(double confidence_level, Iterator first, Iterator last, sample const& resample, Estimator&& estimator) {
+            Estimate<double> bootstrap( double confidence_level,
+                                        std::vector<double>::iterator first,
+                                        std::vector<double>::iterator last,
+                                        sample const& resample,
+                                        Estimator&& estimator ) {
                 auto n_samples = last - first;
 
                 double point = estimator(first, last);
@@ -95,13 +75,13 @@ namespace Catch {
 
                 sample jack = jackknife(estimator, first, last);
                 double jack_mean = mean(jack.begin(), jack.end());
-                double sum_squares, sum_cubes;
+                double sum_squares = 0, sum_cubes = 0;
-                std::tie(sum_squares, sum_cubes) = std::accumulate(jack.begin(), jack.end(), std::make_pair(0., 0.), [jack_mean](std::pair<double, double> sqcb, double x) -> std::pair<double, double> {
+                for (double x : jack) {
-                    auto d = jack_mean - x;
+                    auto difference = jack_mean - x;
-                    auto d2 = d * d;
+                    auto square = difference * difference;
-                    auto d3 = d2 * d;
+                    auto cube = square * difference;
-                    return { sqcb.first + d2, sqcb.second + d3 };
+                    sum_squares += square; sum_cubes += cube;
-                });
+                }
 
                 double accel = sum_cubes / (6 * std::pow(sum_squares, 1.5));
                 long n = static_cast<long>(resample.size());
@@ -128,15 +108,16 @@ namespace Catch {
                 return { point, resample[lo], resample[hi], confidence_level };
             }
 
-            double outlier_variance(Estimate<double> mean, Estimate<double> stddev, int n);
-
             struct bootstrap_analysis {
                 Estimate<double> mean;
                 Estimate<double> standard_deviation;
                 double outlier_variance;
             };
 
-            bootstrap_analysis analyse_samples(double confidence_level, unsigned int n_resamples, std::vector<double>::iterator first, std::vector<double>::iterator last);
+            bootstrap_analysis analyse_samples(double confidence_level,
+                                               unsigned int n_resamples,
+                                               std::vector<double>::iterator first,
+                                               std::vector<double>::iterator last);
         } // namespace Detail
     } // namespace Benchmark
 } // namespace Catch

src/catch2/catch_all.hpp

@@ -86,6 +86,7 @@
 #include <catch2/internal/catch_platform.hpp>
 #include <catch2/internal/catch_polyfills.hpp>
 #include <catch2/internal/catch_preprocessor.hpp>
+#include <catch2/internal/catch_preprocessor_internal_stringify.hpp>
 #include <catch2/internal/catch_preprocessor_remove_parens.hpp>
 #include <catch2/internal/catch_random_number_generator.hpp>
 #include <catch2/internal/catch_random_seed_generation.hpp>

src/catch2/catch_config.cpp

@@ -105,7 +105,7 @@ namespace Catch {
             elem = trim(elem);
         }
 
-        // Insert the default reporter if user hasn't asked for a specfic one
+        // Insert the default reporter if user hasn't asked for a specific one
         if ( m_data.reporterSpecifications.empty() ) {
             m_data.reporterSpecifications.push_back( {
 #if defined( CATCH_CONFIG_DEFAULT_REPORTER )

src/catch2/catch_registry_hub.cpp

@@ -22,6 +22,8 @@
 #include <catch2/internal/catch_move_and_forward.hpp>
 #include <catch2/internal/catch_reporter_registry.hpp>
 
+#include <exception>
+
 namespace Catch {
 
     namespace {

src/catch2/catch_session.cpp

@@ -13,9 +13,9 @@
 #include <catch2/internal/catch_run_context.hpp>
 #include <catch2/catch_test_spec.hpp>
 #include <catch2/catch_version.hpp>
-#include <catch2/interfaces/catch_interfaces_testcase.hpp>
 #include <catch2/internal/catch_startup_exception_registry.hpp>
 #include <catch2/internal/catch_sharding.hpp>
+#include <catch2/internal/catch_test_case_registry_impl.hpp>
 #include <catch2/internal/catch_textflow.hpp>
 #include <catch2/internal/catch_windows_h_proxy.hpp>
 #include <catch2/reporters/catch_reporter_multi.hpp>
@@ -27,6 +27,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <exception>
 #include <iomanip>
 #include <set>
 

src/catch2/catch_test_case_info.cpp

@@ -139,12 +139,20 @@ namespace Catch {
         for (size_t idx = 0; idx < originalTags.size(); ++idx) {
             auto c = originalTags[idx];
             if (c == '[') {
-                assert(!inTag);
+                CATCH_ENFORCE(
+                    !inTag,
+                    "Found '[' inside a tag while registering test case '"
+                        << _nameAndTags.name << "' at " << _lineInfo );
+
                 inTag = true;
                 tagStart = idx;
             }
             if (c == ']') {
-                assert(inTag);
+                CATCH_ENFORCE(
+                    inTag,
+                    "Found unmatched ']' while registering test case '"
+                        << _nameAndTags.name << "' at " << _lineInfo );
+
                 inTag = false;
                 tagEnd = idx;
                 assert(tagStart < tagEnd);
@@ -153,7 +161,11 @@ namespace Catch {
                 // it over to backing storage and actually reference the
                 // backing storage in the saved tags
                 StringRef tagStr = originalTags.substr(tagStart+1, tagEnd - tagStart - 1);
-                CATCH_ENFORCE(!tagStr.empty(), "Empty tags are not allowed");
+                CATCH_ENFORCE( !tagStr.empty(),
+                               "Found an empty tag while registering test case '"
+                                   << _nameAndTags.name << "' at "
+                                   << _lineInfo );
+
                 enforceNotReservedTag(tagStr, lineInfo);
                 properties |= parseSpecialTag(tagStr);
                 // When copying a tag to the backing storage, we need to
@@ -167,8 +179,12 @@ namespace Catch {
                 // the tags.
                 internalAppendTag(tagStr);
             }
-            (void)inTag; // Silence "set-but-unused" warning in release mode.
         }
+        CATCH_ENFORCE( !inTag,
+                       "Found an unclosed tag while registering test case '"
+                           << _nameAndTags.name << "' at " << _lineInfo );
+
+
         // Add [.] if relevant
         if (isHidden()) {
             internalAppendTag("."_sr);

src/catch2/catch_test_spec.cpp

@@ -7,6 +7,7 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/catch_test_spec.hpp>
 #include <catch2/interfaces/catch_interfaces_testcase.hpp>
+#include <catch2/internal/catch_test_case_registry_impl.hpp>
 #include <catch2/internal/catch_reusable_string_stream.hpp>
 #include <catch2/internal/catch_string_manip.hpp>
 #include <catch2/catch_test_case_info.hpp>
@@ -107,16 +108,18 @@ namespace Catch {
         return std::any_of( m_filters.begin(), m_filters.end(), [&]( Filter const& f ){ return f.matches( testCase ); } );
     }
 
-    TestSpec::Matches TestSpec::matchesByFilter( std::vector<TestCaseHandle> const& testCases, IConfig const& config ) const
+    TestSpec::Matches TestSpec::matchesByFilter( std::vector<TestCaseHandle> const& testCases, IConfig const& config ) const {
-    {
+        Matches matches;
-        Matches matches( m_filters.size() );
+        matches.reserve( m_filters.size() );
-        std::transform( m_filters.begin(), m_filters.end(), matches.begin(), [&]( Filter const& filter ){
+        for ( auto const& filter : m_filters ) {
             std::vector<TestCaseHandle const*> currentMatches;
             for ( auto const& test : testCases )
-                if( isThrowSafe( test, config ) && filter.matches( test.getTestCaseInfo() ) )
+                if ( isThrowSafe( test, config ) &&
+                     filter.matches( test.getTestCaseInfo() ) )
                     currentMatches.emplace_back( &test );
-            return FilterMatch{ extractFilterName(filter), currentMatches };
+            matches.push_back(
-        } );
+                FilterMatch{ extractFilterName( filter ), currentMatches } );
+        }
         return matches;
     }
 

src/catch2/catch_user_config.hpp.in

@@ -171,7 +171,7 @@
 
 // ------
 // Simple toggle defines
-// their value is never used and they cannot be overriden
+// their value is never used and they cannot be overridden
 // ------
 
 

src/catch2/interfaces/catch_interfaces_capture.hpp

@@ -43,6 +43,7 @@ namespace Catch {
     public:
         virtual ~IResultCapture();
 
+        virtual void notifyAssertionStarted( AssertionInfo const& info ) = 0;
         virtual bool sectionStarted( StringRef sectionName,
                                      SourceLineInfo const& sectionLineInfo,
                                      Counts& assertions ) = 0;

src/catch2/interfaces/catch_interfaces_reporter.hpp

@@ -205,7 +205,7 @@ namespace Catch {
          */
         virtual void skipTest( TestCaseInfo const& testInfo ) = 0;
 
-        //! Called if a fatal error (signal/structured exception) occured
+        //! Called if a fatal error (signal/structured exception) occurred
         virtual void fatalErrorEncountered( StringRef error ) = 0;
 
         //! Writes out information about provided reporters using reporter-specific format

src/catch2/interfaces/catch_interfaces_testcase.hpp

@@ -12,7 +12,6 @@
 
 namespace Catch {
 
-    class TestSpec;
     struct TestCaseInfo;
     class TestCaseHandle;
     class IConfig;
@@ -26,11 +25,6 @@ namespace Catch {
         virtual std::vector<TestCaseHandle> const& getAllTestsSorted( IConfig const& config ) const = 0;
     };
 
-    bool isThrowSafe( TestCaseHandle const& testCase, IConfig const& config );
-    bool matchTest( TestCaseHandle const& testCase, TestSpec const& testSpec, IConfig const& config );
-    std::vector<TestCaseHandle> filterTests( std::vector<TestCaseHandle> const& testCases, TestSpec const& testSpec, IConfig const& config );
-    std::vector<TestCaseHandle> const& getAllTestCasesSorted( IConfig const& config );
-
 }
 
 #endif // CATCH_INTERFACES_TESTCASE_HPP_INCLUDED

src/catch2/internal/catch_assertion_handler.cpp

@@ -23,7 +23,9 @@ namespace Catch {
             ResultDisposition::Flags resultDisposition )
     :   m_assertionInfo{ macroName, lineInfo, capturedExpression, resultDisposition },
         m_resultCapture( getResultCapture() )
-    {}
+    {
+        m_resultCapture.notifyAssertionStarted( m_assertionInfo );
+    }
 
     void AssertionHandler::handleExpr( ITransientExpression const& expr ) {
         m_resultCapture.handleExpr( m_assertionInfo, expr, m_reaction );

src/catch2/internal/catch_compiler_capabilities.hpp

@@ -50,12 +50,18 @@
 #    define CATCH_INTERNAL_SUPPRESS_PARENTHESES_WARNINGS \
          _Pragma( "GCC diagnostic ignored \"-Wparentheses\"" )
 
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT \
+         _Pragma( "GCC diagnostic ignored \"-Wunused-result\"" )
+
 #    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
          _Pragma( "GCC diagnostic ignored \"-Wunused-variable\"" )
 
 #    define CATCH_INTERNAL_SUPPRESS_USELESS_CAST_WARNINGS \
          _Pragma( "GCC diagnostic ignored \"-Wuseless-cast\"" )
 
+#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
+         _Pragma( "GCC diagnostic ignored \"-Wshadow\"" )
+
 #    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__)
 
 #endif
@@ -128,6 +134,9 @@
 #    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS \
         _Pragma( "clang diagnostic ignored \"-Wcomma\"" )
 
+#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS \
+        _Pragma( "clang diagnostic ignored \"-Wshadow\"" )
+
 #endif // __clang__
 
 
@@ -365,6 +374,9 @@
 #if !defined(CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS)
 #   define CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS
 #endif
+#if !defined(CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT)
+#   define CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT
+#endif
 #if !defined(CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS)
 #   define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS
 #endif
@@ -374,6 +386,16 @@
 #if !defined(CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS)
 #   define CATCH_INTERNAL_SUPPRESS_ZERO_VARIADIC_WARNINGS
 #endif
+#if !defined( CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS )
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS
+#endif
+#if !defined( CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS )
+#    define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS
+#endif
+#if !defined( CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS )
+#    define CATCH_INTERNAL_SUPPRESS_SHADOW_WARNINGS
+#endif
+
 
 // The goal of this macro is to avoid evaluation of the arguments, but
 // still have the compiler warn on problems inside...
@@ -387,13 +409,6 @@
 #   undef CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS
 #endif
 
-#if !defined(CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS)
-#   define CATCH_INTERNAL_SUPPRESS_UNUSED_TEMPLATE_WARNINGS
-#endif
-
-#if !defined(CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS)
-#   define CATCH_INTERNAL_SUPPRESS_COMMA_WARNINGS
-#endif
 
 #if defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
 #define CATCH_TRY if ((true))

src/catch2/internal/catch_config_counter.hpp

@@ -18,6 +18,8 @@
 #ifndef CATCH_CONFIG_COUNTER_HPP_INCLUDED
 #define CATCH_CONFIG_COUNTER_HPP_INCLUDED
 
+#include <catch2/catch_user_config.hpp>
+
 #if ( !defined(__JETBRAINS_IDE__) || __JETBRAINS_IDE__ >= 20170300L )
     #define CATCH_INTERNAL_CONFIG_COUNTER
 #endif

src/catch2/internal/catch_config_uncaught_exceptions.hpp

@@ -17,6 +17,8 @@
 #ifndef CATCH_CONFIG_UNCAUGHT_EXCEPTIONS_HPP_INCLUDED
 #define CATCH_CONFIG_UNCAUGHT_EXCEPTIONS_HPP_INCLUDED
 
+#include <catch2/catch_user_config.hpp>
+
 #if defined(_MSC_VER)
 #  if _MSC_VER >= 1900 // Visual Studio 2015 or newer
 #    define CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS

src/catch2/internal/catch_config_wchar.hpp

@@ -17,6 +17,8 @@
 #ifndef CATCH_CONFIG_WCHAR_HPP_INCLUDED
 #define CATCH_CONFIG_WCHAR_HPP_INCLUDED
 
+#include <catch2/catch_user_config.hpp>
+
 // We assume that WCHAR should be enabled by default, and only disabled
 // for a shortlist (so far only DJGPP) of compilers.
 

src/catch2/internal/catch_exception_translator_registry.cpp

@@ -11,6 +11,8 @@
 #include <catch2/internal/catch_test_failure_exception.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
+#include <exception>
+
 namespace Catch {
 
     namespace {

src/catch2/internal/catch_list.cpp

@@ -9,8 +9,8 @@
 
 #include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
 #include <catch2/interfaces/catch_interfaces_reporter.hpp>
-#include <catch2/interfaces/catch_interfaces_testcase.hpp>
 #include <catch2/interfaces/catch_interfaces_reporter_factory.hpp>
+#include <catch2/internal/catch_test_case_registry_impl.hpp>
 #include <catch2/internal/catch_reporter_registry.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 #include <catch2/internal/catch_case_insensitive_comparisons.hpp>

src/catch2/internal/catch_optional.hpp

@@ -8,6 +8,8 @@
 #ifndef CATCH_OPTIONAL_HPP_INCLUDED
 #define CATCH_OPTIONAL_HPP_INCLUDED
 
+#include <catch2/internal/catch_move_and_forward.hpp>
+
 #include <cassert>
 
 namespace Catch {
@@ -17,34 +19,49 @@ namespace Catch {
     class Optional {
     public:
         Optional(): nullableValue( nullptr ) {}
-        Optional( T const& _value )
+        ~Optional() { reset(); }
-        : nullableValue( new( storage ) T( _value ) )
-        {}
-        Optional( Optional const& _other )
-        : nullableValue( _other ? new( storage ) T( *_other ) : nullptr )
-        {}
 
-        ~Optional() {
+        Optional( T const& _value ):
-            reset();
+            nullableValue( new ( storage ) T( _value ) ) {}
-        }
+        Optional( T&& _value ):
+            nullableValue( new ( storage ) T( CATCH_MOVE( _value ) ) ) {}
 
-        Optional& operator= ( Optional const& _other ) {
-            if( &_other != this ) {
-                reset();
-                if( _other )
-                    nullableValue = new( storage ) T( *_other );
-            }
-            return *this;
-        }
         Optional& operator=( T const& _value ) {
             reset();
             nullableValue = new ( storage ) T( _value );
             return *this;
         }
+        Optional& operator=( T&& _value ) {
+            reset();
+            nullableValue = new ( storage ) T( CATCH_MOVE( _value ) );
+            return *this;
+        }
+
+        Optional( Optional const& _other ):
+            nullableValue( _other ? new ( storage ) T( *_other ) : nullptr ) {}
+        Optional( Optional&& _other ):
+            nullableValue( _other ? new ( storage ) T( CATCH_MOVE( *_other ) )
+                                  : nullptr ) {}
+
+        Optional& operator=( Optional const& _other ) {
+            if ( &_other != this ) {
+                reset();
+                if ( _other ) { nullableValue = new ( storage ) T( *_other ); }
+            }
+            return *this;
+        }
+        Optional& operator=( Optional&& _other ) {
+            if ( &_other != this ) {
+                reset();
+                if ( _other ) {
+                    nullableValue = new ( storage ) T( CATCH_MOVE( *_other ) );
+                }
+            }
+            return *this;
+        }
 
         void reset() {
-            if( nullableValue )
+            if ( nullableValue ) { nullableValue->~T(); }
-                nullableValue->~T();
             nullableValue = nullptr;
         }
 

src/catch2/internal/catch_preprocessor_internal_stringify.hpp

@@ -0,0 +1,19 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#ifndef CATCH_PREPROCESSOR_INTERNAL_STRINGIFY_HPP_INCLUDED
+#define CATCH_PREPROCESSOR_INTERNAL_STRINGIFY_HPP_INCLUDED
+
+#include <catch2/catch_user_config.hpp>
+
+#if !defined(CATCH_CONFIG_DISABLE_STRINGIFICATION)
+  #define CATCH_INTERNAL_STRINGIFY(...) #__VA_ARGS__##_catch_sr
+#else
+  #define CATCH_INTERNAL_STRINGIFY(...) "Disabled by CATCH_CONFIG_DISABLE_STRINGIFICATION"_catch_sr
+#endif
+
+#endif // CATCH_PREPROCESSOR_INTERNAL_STRINGIFY_HPP_INCLUDED

src/catch2/internal/catch_reporter_registry.cpp

@@ -57,8 +57,6 @@ namespace Catch {
         auto it = m_impl->factories.find( name );
         if ( it == m_impl->factories.end() ) return nullptr;
         return it->second->create( CATCH_MOVE( config ) );
-
-        return IEventListenerPtr();
     }
 
     void ReporterRegistry::registerReporter( std::string const& name,

src/catch2/internal/catch_reporter_spec_parser.cpp

@@ -21,9 +21,9 @@ namespace Catch {
         };
 
         kvPair splitKVPair(StringRef kvString) {
-            auto splitPos = static_cast<size_t>( std::distance(
+            auto splitPos = static_cast<size_t>(
-                kvString.begin(),
+                std::find( kvString.begin(), kvString.end(), '=' ) -
-                std::find( kvString.begin(), kvString.end(), '=' ) ) );
+                kvString.begin() );
 
             return { kvString.substr( 0, splitPos ),
                      kvString.substr( splitPos + 1, kvString.size() ) };

src/catch2/internal/catch_run_context.cpp

@@ -267,7 +267,7 @@ namespace Catch {
     }
 
 
-    void RunContext::assertionEnded(AssertionResult const & result) {
+    void RunContext::assertionEnded(AssertionResult&& result) {
         if (result.getResultType() == ResultWas::Ok) {
             m_totals.assertions.passed++;
             m_lastAssertionPassed = true;
@@ -289,19 +289,26 @@ namespace Catch {
 
         m_reporter->assertionEnded(AssertionStats(result, m_messages, m_totals));
 
-        if (result.getResultType() != ResultWas::Warning)
+        if ( result.getResultType() != ResultWas::Warning ) {
             m_messageScopes.clear();
+        }
 
         // Reset working state
         resetAssertionInfo();
-        m_lastResult = result;
+        m_lastResult = CATCH_MOVE( result );
     }
     void RunContext::resetAssertionInfo() {
         m_lastAssertionInfo.macroName = StringRef();
         m_lastAssertionInfo.capturedExpression = "{Unknown expression after the reported line}"_sr;
     }
 
-    bool RunContext::sectionStarted(StringRef sectionName, SourceLineInfo const& sectionLineInfo, Counts & assertions) {
+    void RunContext::notifyAssertionStarted( AssertionInfo const& info ) {
+        m_reporter->assertionStarting( info );
+    }
+
+    bool RunContext::sectionStarted( StringRef sectionName,
+                                     SourceLineInfo const& sectionLineInfo,
+                                     Counts& assertions ) {
         ITracker& sectionTracker =
             SectionTracker::acquire( m_trackerContext,
                                      TestCaseTracking::NameAndLocationRef(
@@ -439,7 +446,7 @@ namespace Catch {
         tempResult.message = static_cast<std::string>(message);
         AssertionResult result(m_lastAssertionInfo, CATCH_MOVE(tempResult));
 
-        assertionEnded(result);
+        assertionEnded(CATCH_MOVE(result) );
 
         handleUnfinishedSections();
 
@@ -561,8 +568,6 @@ namespace Catch {
         ITransientExpression const& expr,
         AssertionReaction& reaction
     ) {
-        m_reporter->assertionStarting( info );
-
         bool negated = isFalseTest( info.resultDisposition );
         bool result = expr.getResult() != negated;
 
@@ -591,7 +596,7 @@ namespace Catch {
         AssertionResult assertionResult{ info, CATCH_MOVE( data ) };
         assertionResult.m_resultData.lazyExpression.m_transientExpression = expr;
 
-        assertionEnded( assertionResult );
+        assertionEnded( CATCH_MOVE(assertionResult) );
     }
 
     void RunContext::handleMessage(
@@ -600,16 +605,16 @@ namespace Catch {
             StringRef message,
             AssertionReaction& reaction
     ) {
-        m_reporter->assertionStarting( info );
-
         m_lastAssertionInfo = info;
 
         AssertionResultData data( resultType, LazyExpression( false ) );
         data.message = static_cast<std::string>(message);
         AssertionResult assertionResult{ m_lastAssertionInfo,
                                          CATCH_MOVE( data ) };
-        assertionEnded( assertionResult );
+
-        if ( !assertionResult.isOk() ) {
+        const auto isOk = assertionResult.isOk();
+        assertionEnded( CATCH_MOVE(assertionResult) );
+        if ( !isOk ) {
             populateReaction( reaction );
         } else if ( resultType == ResultWas::ExplicitSkip ) {
             // TODO: Need to handle this explicitly, as ExplicitSkip is
@@ -634,7 +639,7 @@ namespace Catch {
         AssertionResultData data( ResultWas::ThrewException, LazyExpression( false ) );
         data.message = CATCH_MOVE(message);
         AssertionResult assertionResult{ info, CATCH_MOVE(data) };
-        assertionEnded( assertionResult );
+        assertionEnded( CATCH_MOVE(assertionResult) );
         populateReaction( reaction );
     }
 
@@ -652,7 +657,7 @@ namespace Catch {
         AssertionResultData data( ResultWas::ThrewException, LazyExpression( false ) );
         data.message = "Exception translation was disabled by CATCH_CONFIG_FAST_COMPILE"s;
         AssertionResult assertionResult{ info, CATCH_MOVE( data ) };
-        assertionEnded( assertionResult );
+        assertionEnded( CATCH_MOVE(assertionResult) );
     }
     void RunContext::handleNonExpr(
             AssertionInfo const &info,
@@ -663,10 +668,10 @@ namespace Catch {
 
         AssertionResultData data( resultType, LazyExpression( false ) );
         AssertionResult assertionResult{ info, CATCH_MOVE( data ) };
-        assertionEnded( assertionResult );
 
-        if( !assertionResult.isOk() )
+        const auto isOk = assertionResult.isOk();
-            populateReaction( reaction );
+        assertionEnded( CATCH_MOVE(assertionResult) );
+        if ( !isOk ) { populateReaction( reaction ); }
     }
 
 

src/catch2/internal/catch_run_context.hpp

@@ -70,6 +70,7 @@ namespace Catch {
                     ResultWas::OfType resultType,
                     AssertionReaction &reaction ) override;
 
+        void notifyAssertionStarted( AssertionInfo const& info ) override;
         bool sectionStarted( StringRef sectionName,
                              SourceLineInfo const& sectionLineInfo,
                              Counts& assertions ) override;
@@ -120,7 +121,7 @@ namespace Catch {
         void resetAssertionInfo();
         bool testForMissingAssertions( Counts& assertions );
 
-        void assertionEnded( AssertionResult const& result );
+        void assertionEnded( AssertionResult&& result );
         void reportExpr
                 (   AssertionInfo const &info,
                     ResultWas::OfType resultType,

src/catch2/internal/catch_string_manip.cpp

@@ -8,7 +8,6 @@
 #include <catch2/internal/catch_string_manip.hpp>
 #include <catch2/internal/catch_stringref.hpp>
 
-#include <algorithm>
 #include <ostream>
 #include <cstring>
 #include <cctype>
@@ -32,9 +31,9 @@ namespace Catch {
         return s.find( infix ) != std::string::npos;
     }
     void toLowerInPlace( std::string& s ) {
-        std::transform( s.begin(), s.end(), s.begin(), []( char c ) {
+        for ( char& c : s ) {
-            return toLower( c );
+            c = toLower( c );
-        } );
+        }
     }
     std::string toLower( std::string const& s ) {
         std::string lc = s;

src/catch2/internal/catch_test_case_registry_impl.cpp

@@ -24,6 +24,38 @@
 
 namespace Catch {
 
+    namespace {
+        static void enforceNoDuplicateTestCases(
+            std::vector<TestCaseHandle> const& tests ) {
+            auto testInfoCmp = []( TestCaseInfo const* lhs,
+                                   TestCaseInfo const* rhs ) {
+                return *lhs < *rhs;
+            };
+            std::set<TestCaseInfo const*, decltype( testInfoCmp )&> seenTests(
+                testInfoCmp );
+            for ( auto const& test : tests ) {
+                const auto infoPtr = &test.getTestCaseInfo();
+                const auto prev = seenTests.insert( infoPtr );
+                CATCH_ENFORCE( prev.second,
+                               "error: test case \""
+                                   << infoPtr->name << "\", with tags \""
+                                   << infoPtr->tagsAsString()
+                                   << "\" already defined.\n"
+                                   << "\tFirst seen at "
+                                   << ( *prev.first )->lineInfo << "\n"
+                                   << "\tRedefined at " << infoPtr->lineInfo );
+            }
+        }
+
+        static bool matchTest( TestCaseHandle const& testCase,
+                               TestSpec const& testSpec,
+                               IConfig const& config ) {
+            return testSpec.matches( testCase.getTestCaseInfo() ) &&
+                   isThrowSafe( testCase, config );
+        }
+
+    } // end unnamed namespace
+
     std::vector<TestCaseHandle> sortTests( IConfig const& config, std::vector<TestCaseHandle> const& unsortedTestCases ) {
         switch (config.runOrder()) {
         case TestRunOrder::Declared:
@@ -80,29 +112,6 @@ namespace Catch {
         return !testCase.getTestCaseInfo().throws() || config.allowThrows();
     }
 
-    bool matchTest( TestCaseHandle const& testCase, TestSpec const& testSpec, IConfig const& config ) {
-        return testSpec.matches( testCase.getTestCaseInfo() ) && isThrowSafe( testCase, config );
-    }
-
-    void
-    enforceNoDuplicateTestCases( std::vector<TestCaseHandle> const& tests ) {
-        auto testInfoCmp = []( TestCaseInfo const* lhs,
-                               TestCaseInfo const* rhs ) {
-            return *lhs < *rhs;
-        };
-        std::set<TestCaseInfo const*, decltype(testInfoCmp) &> seenTests(testInfoCmp);
-        for ( auto const& test : tests ) {
-            const auto infoPtr = &test.getTestCaseInfo();
-            const auto prev = seenTests.insert( infoPtr );
-            CATCH_ENFORCE(
-                prev.second,
-                "error: test case \"" << infoPtr->name << "\", with tags \""
-                    << infoPtr->tagsAsString() << "\" already defined.\n"
-                    << "\tFirst seen at " << ( *prev.first )->lineInfo << "\n"
-                    << "\tRedefined at " << infoPtr->lineInfo );
-        }
-    }
-
     std::vector<TestCaseHandle> filterTests( std::vector<TestCaseHandle> const& testCases, TestSpec const& testSpec, IConfig const& config ) {
         std::vector<TestCaseHandle> filtered;
         filtered.reserve( testCases.size() );

src/catch2/internal/catch_test_case_registry_impl.hpp

@@ -24,9 +24,6 @@ namespace Catch {
     std::vector<TestCaseHandle> sortTests( IConfig const& config, std::vector<TestCaseHandle> const& unsortedTestCases );
 
     bool isThrowSafe( TestCaseHandle const& testCase, IConfig const& config );
-    bool matchTest( TestCaseHandle const& testCase, TestSpec const& testSpec, IConfig const& config );
-
-    void enforceNoDuplicateTestCases( std::vector<TestCaseHandle> const& functions );
 
     std::vector<TestCaseHandle> filterTests( std::vector<TestCaseHandle> const& testCases, TestSpec const& testSpec, IConfig const& config );
     std::vector<TestCaseHandle> const& getAllTestCasesSorted( IConfig const& config );

src/catch2/internal/catch_test_case_tracker.hpp

@@ -113,7 +113,7 @@ namespace TestCaseTracking {
 
         //! Returns true if tracker run to completion (successfully or not)
         virtual bool isComplete() const = 0;
-        //! Returns true if tracker run to completion succesfully
+        //! Returns true if tracker run to completion successfully
         bool isSuccessfullyCompleted() const {
             return m_runState == CompletedSuccessfully;
         }

src/catch2/internal/catch_test_macro_impl.hpp

@@ -10,6 +10,7 @@
 
 #include <catch2/catch_user_config.hpp>
 #include <catch2/internal/catch_assertion_handler.hpp>
+#include <catch2/internal/catch_preprocessor_internal_stringify.hpp>
 #include <catch2/interfaces/catch_interfaces_capture.hpp>
 #include <catch2/internal/catch_stringref.hpp>
 #include <catch2/internal/catch_source_line_info.hpp>
@@ -22,12 +23,6 @@
 
 #if !defined(CATCH_CONFIG_DISABLE)
 
-#if !defined(CATCH_CONFIG_DISABLE_STRINGIFICATION)
-  #define CATCH_INTERNAL_STRINGIFY(...) #__VA_ARGS__##_catch_sr
-#else
-  #define CATCH_INTERNAL_STRINGIFY(...) "Disabled by CATCH_CONFIG_DISABLE_STRINGIFICATION"_catch_sr
-#endif
-
 #if defined(CATCH_CONFIG_FAST_COMPILE) || defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -95,6 +90,7 @@
         if( catchAssertionHandler.allowThrows() ) \
             try { \
                 CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
+                CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT \
                 CATCH_INTERNAL_SUPPRESS_USELESS_CAST_WARNINGS \
                 static_cast<void>(__VA_ARGS__); \
                 CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
@@ -115,6 +111,7 @@
         if( catchAssertionHandler.allowThrows() ) \
             try { \
                 CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
+                CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT \
                 CATCH_INTERNAL_SUPPRESS_USELESS_CAST_WARNINGS \
                 static_cast<void>(expr); \
                 CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
@@ -141,6 +138,7 @@
         if( catchAssertionHandler.allowThrows() ) \
             try { \
                 CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
+                CATCH_INTERNAL_SUPPRESS_UNUSED_RESULT \
                 CATCH_INTERNAL_SUPPRESS_USELESS_CAST_WARNINGS \
                 static_cast<void>(__VA_ARGS__); \
                 CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \

src/catch2/internal/catch_textflow.hpp

@@ -59,7 +59,7 @@ namespace Catch {
                 // Calculates the length of the current line
                 void calcLength();
 
-                // Returns current indention width
+                // Returns current indentation width
                 size_t indentSize() const;
 
                 // Creates an indented and (optionally) suffixed string from

src/catch2/matchers/catch_matchers_range_equals.hpp

@@ -129,7 +129,7 @@ namespace Catch {
 
         /**
          * Creates a matcher that checks if all elements in a range are equal
-         * to all elements in another range, in some permuation.
+         * to all elements in another range, in some permutation.
          *
          * Uses to provided predicate `predicate` to do the comparisons
          */

src/catch2/matchers/internal/catch_matchers_impl.hpp

@@ -8,9 +8,14 @@
 #ifndef CATCH_MATCHERS_IMPL_HPP_INCLUDED
 #define CATCH_MATCHERS_IMPL_HPP_INCLUDED
 
-#include <catch2/internal/catch_test_macro_impl.hpp>
+#include <catch2/internal/catch_assertion_handler.hpp>
+#include <catch2/internal/catch_source_line_info.hpp>
+#include <catch2/internal/catch_decomposer.hpp>
+#include <catch2/internal/catch_preprocessor_internal_stringify.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
+#include <string>
+
 namespace Catch {
 
     template<typename ArgT, typename MatcherT>

src/catch2/meson.build

@@ -110,6 +110,7 @@ internal_headers = [
   'internal/catch_platform.hpp',
   'internal/catch_polyfills.hpp',
   'internal/catch_preprocessor.hpp',
+  'internal/catch_preprocessor_internal_stringify.hpp',
   'internal/catch_preprocessor_remove_parens.hpp',
   'internal/catch_random_number_generator.hpp',
   'internal/catch_random_seed_generation.hpp',

src/catch2/reporters/catch_reporter_compact.cpp

@@ -171,7 +171,7 @@ private:
             return;
 
         const auto itEnd = messages.cend();
-        const auto N = static_cast<std::size_t>(std::distance(itMessage, itEnd));
+        const auto N = static_cast<std::size_t>(itEnd - itMessage);
 
         stream << colourImpl->guardColour( colour ) << " with "
                << pluralise( N, "message"_sr ) << ':';

src/catch2/reporters/catch_reporter_cumulative_base.hpp

@@ -124,7 +124,7 @@ namespace Catch {
         void skipTest(TestCaseInfo const&) override {}
 
     protected:
-        //! Should the cumulative base store the assertion expansion for succesful assertions?
+        //! Should the cumulative base store the assertion expansion for successful assertions?
         bool m_shouldStoreSuccesfulAssertions = true;
         //! Should the cumulative base store the assertion expansion for failed assertions?
         bool m_shouldStoreFailedAssertions = true;

src/catch2/reporters/catch_reporter_tap.cpp

@@ -14,7 +14,6 @@
 #include <catch2/reporters/catch_reporter_helpers.hpp>
 
 #include <algorithm>
-#include <iterator>
 #include <ostream>
 
 namespace Catch {
@@ -165,7 +164,7 @@ namespace Catch {
 
                 // using messages.end() directly (or auto) yields compilation error:
                 std::vector<MessageInfo>::const_iterator itEnd = messages.end();
-                const std::size_t N = static_cast<std::size_t>(std::distance(itMessage, itEnd));
+                const std::size_t N = static_cast<std::size_t>(itEnd - itMessage);
 
                 stream << colourImpl->guardColour( colour ) << " with "
                        << pluralise( N, "message"_sr ) << ':';

tests/ExtraTests/CMakeLists.txt

@@ -468,6 +468,17 @@ set_tests_properties(
 )
 
 
+add_executable(AssertionStartingEventGoesBeforeAssertionIsEvaluated
+  X20-AssertionStartingEventGoesBeforeAssertionIsEvaluated.cpp
+)
+target_link_libraries(AssertionStartingEventGoesBeforeAssertionIsEvaluated
+  PRIVATE Catch2::Catch2WithMain
+)
+add_test(
+  NAME ReporterEvents::AssertionStartingHappensBeforeAssertionIsEvaluated
+  COMMAND $<TARGET_FILE:AssertionStartingEventGoesBeforeAssertionIsEvaluated>
+)
+
 #add_executable(DebugBreakMacros ${TESTS_DIR}/X12-CustomDebugBreakMacro.cpp)
 #target_link_libraries(DebugBreakMacros Catch2)
 #add_test(NAME DebugBreakMacros COMMAND DebugBreakMacros --break)

tests/ExtraTests/X20-AssertionStartingEventGoesBeforeAssertionIsEvaluated.cpp

@@ -0,0 +1,81 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+
+/**\file
+ * TODO: FIXES Registers custom reporter that reports testCase* events
+ *
+ * The resulting executable can then be used by an external Python script
+ * to verify that testCase{Starting,Ended} and testCasePartial{Starting,Ended}
+ * events are properly nested.
+ */
+
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/reporters/catch_reporter_event_listener.hpp>
+#include <catch2/reporters/catch_reporter_registrars.hpp>
+#include <catch2/matchers/catch_matchers_predicate.hpp>
+
+namespace {
+
+    static size_t assertion_starting_events_seen = 0;
+
+    // TODO: custom matcher to check that "assertion_starting_events_seen" has
+    // the right number of checks
+
+    class AssertionStartingListener : public Catch::EventListenerBase {
+    public:
+        AssertionStartingListener( Catch::IConfig const* config ):
+            EventListenerBase( config ) {}
+
+        void assertionStarting( Catch::AssertionInfo const& ) override {
+            ++assertion_starting_events_seen;
+        }
+    };
+
+    static bool f1() {
+        return assertion_starting_events_seen == 1;
+    }
+
+    static void f2() {
+        if ( assertion_starting_events_seen != 2 ) { throw 1; }
+    }
+
+    static void f3() {
+        if ( assertion_starting_events_seen == 3 ) { throw 1; }
+    }
+
+    static bool f4() { return assertion_starting_events_seen == 4; }
+
+    static void f5() { throw assertion_starting_events_seen; }
+
+} // anonymous namespace
+
+CATCH_REGISTER_LISTENER( AssertionStartingListener )
+
+TEST_CASE() {
+    // **IMPORTANT**
+    // The order of assertions below matters.
+    REQUIRE( f1() );
+    REQUIRE_NOTHROW( f2() );
+    REQUIRE_THROWS( f3() );
+    REQUIRE_THAT( f4(),
+                  Catch::Matchers::Predicate<bool>( []( bool b ) { return b; } ) );
+    REQUIRE_THROWS_MATCHES(
+        f5(), size_t, Catch::Matchers::Predicate<size_t>( []( size_t i ) {
+            return i == 5;
+        } ) );
+
+    CAPTURE( assertion_starting_events_seen ); // **not** an assertion
+    INFO( "some info msg" );                   // **not** an assertion
+    WARN( "warning! warning!" );               // assertion-like message
+    SUCCEED();                                 // assertion-like message
+
+    // We skip FAIL/SKIP and so on, which fail the test.
+
+    // This require will also increment the count once
+    REQUIRE( assertion_starting_events_seen == 8 );
+}

tests/SelfTest/Baselines/automake.sw.approved.txt

@@ -131,7 +131,6 @@ Nor would this
 :test-result: PASS Default scale is invisible to comparison
 :test-result: PASS Directly creating an EnumInfo
 :test-result: PASS Empty stream name opens cout stream
-:test-result: PASS Empty tag is not allowed
 :test-result: FAIL EndsWith string matcher
 :test-result: PASS Enums can quickly have stringification enabled using REGISTER_ENUM
 :test-result: PASS Enums in namespaces can quickly have stringification enabled using REGISTER_ENUM

tests/SelfTest/Baselines/automake.sw.multi.approved.txt

@@ -129,7 +129,6 @@
 :test-result: PASS Default scale is invisible to comparison
 :test-result: PASS Directly creating an EnumInfo
 :test-result: PASS Empty stream name opens cout stream
-:test-result: PASS Empty tag is not allowed
 :test-result: FAIL EndsWith string matcher
 :test-result: PASS Enums can quickly have stringification enabled using REGISTER_ENUM
 :test-result: PASS Enums in namespaces can quickly have stringification enabled using REGISTER_ENUM

tests/SelfTest/Baselines/compact.sw.approved.txt

@@ -521,7 +521,6 @@ ToString.tests.cpp:<line number>: passed: enumInfo->lookup(3) == "{** unexpected
 ==
 "{** unexpected enum value **}"
 Stream.tests.cpp:<line number>: passed: Catch::makeStream( "" )->isConsole() for: true
-Tag.tests.cpp:<line number>: passed: Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
 Matchers.tests.cpp:<line number>: failed: testStringForMatching(), EndsWith( "Substring" ) for: "this string contains 'abc' as a substring" ends with: "Substring"
 Matchers.tests.cpp:<line number>: failed: testStringForMatching(), EndsWith( "this", Catch::CaseSensitive::No ) for: "this string contains 'abc' as a substring" ends with: "this" (case insensitive)
 EnumToString.tests.cpp:<line number>: passed: stringify( EnumClass3::Value1 ) == "Value1" for: "Value1" == "Value1"
@@ -2538,7 +2537,7 @@ InternalBenchmark.tests.cpp:<line number>: passed: med == 18. for: 18.0 == 18.0
 InternalBenchmark.tests.cpp:<line number>: passed: q3 == 23. for: 23.0 == 23.0
 Misc.tests.cpp:<line number>: passed:
 Misc.tests.cpp:<line number>: passed:
-test cases:  409 |  309 passed |  84 failed | 5 skipped | 11 failed as expected
+test cases:  408 |  308 passed |  84 failed | 5 skipped | 11 failed as expected
-assertions: 2226 | 2049 passed | 145 failed | 32 failed as expected
+assertions: 2225 | 2048 passed | 145 failed | 32 failed as expected
 
 

tests/SelfTest/Baselines/compact.sw.multi.approved.txt

@@ -519,7 +519,6 @@ ToString.tests.cpp:<line number>: passed: enumInfo->lookup(3) == "{** unexpected
 ==
 "{** unexpected enum value **}"
 Stream.tests.cpp:<line number>: passed: Catch::makeStream( "" )->isConsole() for: true
-Tag.tests.cpp:<line number>: passed: Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
 Matchers.tests.cpp:<line number>: failed: testStringForMatching(), EndsWith( "Substring" ) for: "this string contains 'abc' as a substring" ends with: "Substring"
 Matchers.tests.cpp:<line number>: failed: testStringForMatching(), EndsWith( "this", Catch::CaseSensitive::No ) for: "this string contains 'abc' as a substring" ends with: "this" (case insensitive)
 EnumToString.tests.cpp:<line number>: passed: stringify( EnumClass3::Value1 ) == "Value1" for: "Value1" == "Value1"
@@ -2527,7 +2526,7 @@ InternalBenchmark.tests.cpp:<line number>: passed: med == 18. for: 18.0 == 18.0
 InternalBenchmark.tests.cpp:<line number>: passed: q3 == 23. for: 23.0 == 23.0
 Misc.tests.cpp:<line number>: passed:
 Misc.tests.cpp:<line number>: passed:
-test cases:  409 |  309 passed |  84 failed | 5 skipped | 11 failed as expected
+test cases:  408 |  308 passed |  84 failed | 5 skipped | 11 failed as expected
-assertions: 2226 | 2049 passed | 145 failed | 32 failed as expected
+assertions: 2225 | 2048 passed | 145 failed | 32 failed as expected
 
 

tests/SelfTest/Baselines/console.std.approved.txt

@@ -1533,6 +1533,6 @@ due to unexpected exception with message:
   Why would you throw a std::string?
 
 ===============================================================================
-test cases:  409 |  323 passed |  69 failed | 6 skipped | 11 failed as expected
+test cases:  408 |  322 passed |  69 failed | 6 skipped | 11 failed as expected
-assertions: 2209 | 2049 passed | 128 failed | 32 failed as expected
+assertions: 2208 | 2048 passed | 128 failed | 32 failed as expected
 

tests/SelfTest/Baselines/console.sw.approved.txt

@@ -3967,15 +3967,6 @@ Stream.tests.cpp:<line number>: PASSED:
 with expansion:
   true
 
--------------------------------------------------------------------------------
-Empty tag is not allowed
--------------------------------------------------------------------------------
-Tag.tests.cpp:<line number>
-...............................................................................
-
-Tag.tests.cpp:<line number>: PASSED:
-  REQUIRE_THROWS( Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo ) )
-
 -------------------------------------------------------------------------------
 EndsWith string matcher
 -------------------------------------------------------------------------------
@@ -13460,7 +13451,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AllTrue range matcher
   Basic usage
-  One false evalutes to false
+  One false evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13499,7 +13490,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AllTrue range matcher
   Contained type is convertible to bool
-  One false evalutes to false
+  One false evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13735,7 +13726,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AnyTrue range matcher
   Basic usage
-  One true evalutes to true
+  One true evaluates to true
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13774,7 +13765,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AnyTrue range matcher
   Contained type is convertible to bool
-  One true evalutes to true
+  One true evaluates to true
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -14010,7 +14001,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of NoneTrue range matcher
   Basic usage
-  One true evalutes to false
+  One true evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -14049,7 +14040,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of NoneTrue range matcher
   Contained type is convertible to bool
-  One true evalutes to false
+  One true evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -18231,6 +18222,6 @@ Misc.tests.cpp:<line number>
 Misc.tests.cpp:<line number>: PASSED:
 
 ===============================================================================
-test cases:  409 |  309 passed |  84 failed | 5 skipped | 11 failed as expected
+test cases:  408 |  308 passed |  84 failed | 5 skipped | 11 failed as expected
-assertions: 2226 | 2049 passed | 145 failed | 32 failed as expected
+assertions: 2225 | 2048 passed | 145 failed | 32 failed as expected
 

tests/SelfTest/Baselines/console.sw.multi.approved.txt

@@ -3965,15 +3965,6 @@ Stream.tests.cpp:<line number>: PASSED:
 with expansion:
   true
 
--------------------------------------------------------------------------------
-Empty tag is not allowed
--------------------------------------------------------------------------------
-Tag.tests.cpp:<line number>
-...............................................................................
-
-Tag.tests.cpp:<line number>: PASSED:
-  REQUIRE_THROWS( Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo ) )
-
 -------------------------------------------------------------------------------
 EndsWith string matcher
 -------------------------------------------------------------------------------
@@ -13453,7 +13444,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AllTrue range matcher
   Basic usage
-  One false evalutes to false
+  One false evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13492,7 +13483,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AllTrue range matcher
   Contained type is convertible to bool
-  One false evalutes to false
+  One false evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13728,7 +13719,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AnyTrue range matcher
   Basic usage
-  One true evalutes to true
+  One true evaluates to true
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -13767,7 +13758,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of AnyTrue range matcher
   Contained type is convertible to bool
-  One true evalutes to true
+  One true evaluates to true
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -14003,7 +13994,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of NoneTrue range matcher
   Basic usage
-  One true evalutes to false
+  One true evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -14042,7 +14033,7 @@ with expansion:
 -------------------------------------------------------------------------------
 Usage of NoneTrue range matcher
   Contained type is convertible to bool
-  One true evalutes to false
+  One true evaluates to false
 -------------------------------------------------------------------------------
 MatchersRanges.tests.cpp:<line number>
 ...............................................................................
@@ -18220,6 +18211,6 @@ Misc.tests.cpp:<line number>
 Misc.tests.cpp:<line number>: PASSED:
 
 ===============================================================================
-test cases:  409 |  309 passed |  84 failed | 5 skipped | 11 failed as expected
+test cases:  408 |  308 passed |  84 failed | 5 skipped | 11 failed as expected
-assertions: 2226 | 2049 passed | 145 failed | 32 failed as expected
+assertions: 2225 | 2048 passed | 145 failed | 32 failed as expected
 

tests/SelfTest/Baselines/junit.sw.approved.txt

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testsuitesloose text artifact
 >
-  <testsuite name="<exe-name>" errors="17" failures="128" skipped="11" tests="2237" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
+  <testsuite name="<exe-name>" errors="17" failures="128" skipped="11" tests="2236" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
     <properties>
       <property name="random-seed" value="1"/>
       <property name="filters" value="&quot;*&quot; ~[!nonportable] ~[!benchmark] ~[approvals]"/>
@@ -463,7 +463,6 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Default scale is invisible to comparison" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Directly creating an EnumInfo" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Empty stream name opens cout stream" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Empty tag is not allowed" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="EndsWith string matcher" time="{duration}" status="run">
       <failure message="testStringForMatching(), EndsWith( &quot;Substring&quot; )" type="CHECK_THAT">
 FAILED:
@@ -1401,10 +1400,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of AllMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/All true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/Empty evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/One false evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/One false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/All true evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
@@ -1414,10 +1413,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of AnyMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/All true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/Empty evaluates to false" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/One true evalutes to true" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/One true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All true evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evalutes to true" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
@@ -1427,10 +1426,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of NoneMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/All true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/Empty evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/One true evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/One true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/All false evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All true evaluates to false" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All false evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>

tests/SelfTest/Baselines/junit.sw.multi.approved.txt

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testsuites>
-  <testsuite name="<exe-name>" errors="17" failures="128" skipped="11" tests="2237" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
+  <testsuite name="<exe-name>" errors="17" failures="128" skipped="11" tests="2236" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
     <properties>
       <property name="random-seed" value="1"/>
       <property name="filters" value="&quot;*&quot; ~[!nonportable] ~[!benchmark] ~[approvals]"/>
@@ -462,7 +462,6 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Default scale is invisible to comparison" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Directly creating an EnumInfo" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Empty stream name opens cout stream" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Empty tag is not allowed" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="EndsWith string matcher" time="{duration}" status="run">
       <failure message="testStringForMatching(), EndsWith( &quot;Substring&quot; )" type="CHECK_THAT">
 FAILED:
@@ -1400,10 +1399,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of AllMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/All true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/Empty evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/One false evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/One false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Basic usage/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/All true evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Contained type is convertible to bool/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AllTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
@@ -1413,10 +1412,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of AnyMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/All true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/Empty evaluates to false" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/One true evalutes to true" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/One true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Basic usage/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All true evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evalutes to true" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All false evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of AnyTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
@@ -1426,10 +1425,10 @@ at Exception.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Usage of NoneMatch range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/All true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/Empty evaluates to true" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/One true evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/One true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Basic usage/All false evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All true evaluates to false" time="{duration}" status="run"/>
-    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evalutes to false" time="{duration}" status="run"/>
+    <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evaluates to false" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All false evaluates to true" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Shortcircuiting/All are read" time="{duration}" status="run"/>
     <testcase classname="<exe-name>.global" name="Usage of NoneTrue range matcher/Shortcircuiting/Short-circuited" time="{duration}" status="run"/>

tests/SelfTest/Baselines/sonarqube.sw.approved.txt

@@ -233,7 +233,6 @@
     <testCase name="startsWith" duration="{duration}"/>
   </file>
   <file path="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp">
-    <testCase name="Empty tag is not allowed" duration="{duration}"/>
     <testCase name="Tag alias can be registered against tag patterns/The same tag alias can only be registered once" duration="{duration}"/>
     <testCase name="Tag alias can be registered against tag patterns/Tag aliases must be of the form [@name]" duration="{duration}"/>
     <testCase name="Tags with spaces and non-alphanumerical characters are accepted" duration="{duration}"/>
@@ -1389,10 +1388,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of AllMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/All true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/Empty evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AllTrue range matcher/Basic usage/One false evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of AllTrue range matcher/Basic usage/One false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/All true evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
@@ -1402,10 +1401,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of AnyMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/All true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/Empty evaluates to false" duration="{duration}"/>
-    <testCase name="Usage of AnyTrue range matcher/Basic usage/One true evalutes to true" duration="{duration}"/>
+    <testCase name="Usage of AnyTrue range matcher/Basic usage/One true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All true evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evalutes to true" duration="{duration}"/>
+    <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
@@ -1415,10 +1414,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of NoneMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/All true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/Empty evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of NoneTrue range matcher/Basic usage/One true evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of NoneTrue range matcher/Basic usage/One true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/All false evaluates to true" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All true evaluates to false" duration="{duration}"/>
-    <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All false evaluates to true" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>

tests/SelfTest/Baselines/sonarqube.sw.multi.approved.txt

@@ -232,7 +232,6 @@
     <testCase name="startsWith" duration="{duration}"/>
   </file>
   <file path="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp">
-    <testCase name="Empty tag is not allowed" duration="{duration}"/>
     <testCase name="Tag alias can be registered against tag patterns/The same tag alias can only be registered once" duration="{duration}"/>
     <testCase name="Tag alias can be registered against tag patterns/Tag aliases must be of the form [@name]" duration="{duration}"/>
     <testCase name="Tags with spaces and non-alphanumerical characters are accepted" duration="{duration}"/>
@@ -1388,10 +1387,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of AllMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/All true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/Empty evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AllTrue range matcher/Basic usage/One false evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of AllTrue range matcher/Basic usage/One false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Basic usage/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/All true evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/One false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Contained type is convertible to bool/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of AllTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
@@ -1401,10 +1400,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of AnyMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/All true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/Empty evaluates to false" duration="{duration}"/>
-    <testCase name="Usage of AnyTrue range matcher/Basic usage/One true evalutes to true" duration="{duration}"/>
+    <testCase name="Usage of AnyTrue range matcher/Basic usage/One true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Basic usage/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All true evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evalutes to true" duration="{duration}"/>
+    <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/One true evaluates to true" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Contained type is convertible to bool/All false evaluates to false" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of AnyTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
@@ -1414,10 +1413,10 @@ at Matchers.tests.cpp:<line number>
     <testCase name="Usage of NoneMatch range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/All true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/Empty evaluates to true" duration="{duration}"/>
-    <testCase name="Usage of NoneTrue range matcher/Basic usage/One true evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of NoneTrue range matcher/Basic usage/One true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Basic usage/All false evaluates to true" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All true evaluates to false" duration="{duration}"/>
-    <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evalutes to false" duration="{duration}"/>
+    <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/One true evaluates to false" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Contained type is convertible to bool/All false evaluates to true" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Shortcircuiting/All are read" duration="{duration}"/>
     <testCase name="Usage of NoneTrue range matcher/Shortcircuiting/Short-circuited" duration="{duration}"/>

tests/SelfTest/Baselines/tap.sw.approved.txt

@@ -986,8 +986,6 @@ ok {test-number} - enumInfo->lookup(1) == "Value2" for: Value2 == "Value2"
 ok {test-number} - enumInfo->lookup(3) == "{** unexpected enum value **}" for: {** unexpected enum value **} == "{** unexpected enum value **}"
 # Empty stream name opens cout stream
 ok {test-number} - Catch::makeStream( "" )->isConsole() for: true
-# Empty tag is not allowed
-ok {test-number} - Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
 # EndsWith string matcher
 not ok {test-number} - testStringForMatching(), EndsWith( "Substring" ) for: "this string contains 'abc' as a substring" ends with: "Substring"
 # EndsWith string matcher
@@ -4477,5 +4475,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
 ok {test-number} -
 # xmlentitycheck
 ok {test-number} -
-1..2237
+1..2236
 

tests/SelfTest/Baselines/tap.sw.multi.approved.txt

@@ -984,8 +984,6 @@ ok {test-number} - enumInfo->lookup(1) == "Value2" for: Value2 == "Value2"
 ok {test-number} - enumInfo->lookup(3) == "{** unexpected enum value **}" for: {** unexpected enum value **} == "{** unexpected enum value **}"
 # Empty stream name opens cout stream
 ok {test-number} - Catch::makeStream( "" )->isConsole() for: true
-# Empty tag is not allowed
-ok {test-number} - Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
 # EndsWith string matcher
 not ok {test-number} - testStringForMatching(), EndsWith( "Substring" ) for: "this string contains 'abc' as a substring" ends with: "Substring"
 # EndsWith string matcher
@@ -4466,5 +4464,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
 ok {test-number} -
 # xmlentitycheck
 ok {test-number} -
-1..2237
+1..2236
 

tests/SelfTest/Baselines/teamcity.sw.approved.txt

@@ -301,8 +301,6 @@
 ##teamcity[testFinished name='Directly creating an EnumInfo' duration="{duration}"]
 ##teamcity[testStarted name='Empty stream name opens cout stream']
 ##teamcity[testFinished name='Empty stream name opens cout stream' duration="{duration}"]
-##teamcity[testStarted name='Empty tag is not allowed']
-##teamcity[testFinished name='Empty tag is not allowed' duration="{duration}"]
 ##teamcity[testStarted name='EndsWith string matcher']
 ##teamcity[testFailed name='EndsWith string matcher' message='Matchers.tests.cpp:<line number>|n...............................................................................|n|nMatchers.tests.cpp:<line number>|nexpression failed|n  CHECK_THAT( testStringForMatching(), EndsWith( "Substring" ) )|nwith expansion:|n  "this string contains |'abc|' as a substring" ends with: "Substring"|n']
 ##teamcity[testFailed name='EndsWith string matcher' message='Matchers.tests.cpp:<line number>|nexpression failed|n  CHECK_THAT( testStringForMatching(), EndsWith( "this", Catch::CaseSensitive::No ) )|nwith expansion:|n  "this string contains |'abc|' as a substring" ends with: "this" (case insensitive)|n']

tests/SelfTest/Baselines/teamcity.sw.multi.approved.txt

@@ -301,8 +301,6 @@
 ##teamcity[testFinished name='Directly creating an EnumInfo' duration="{duration}"]
 ##teamcity[testStarted name='Empty stream name opens cout stream']
 ##teamcity[testFinished name='Empty stream name opens cout stream' duration="{duration}"]
-##teamcity[testStarted name='Empty tag is not allowed']
-##teamcity[testFinished name='Empty tag is not allowed' duration="{duration}"]
 ##teamcity[testStarted name='EndsWith string matcher']
 ##teamcity[testFailed name='EndsWith string matcher' message='Matchers.tests.cpp:<line number>|n...............................................................................|n|nMatchers.tests.cpp:<line number>|nexpression failed|n  CHECK_THAT( testStringForMatching(), EndsWith( "Substring" ) )|nwith expansion:|n  "this string contains |'abc|' as a substring" ends with: "Substring"|n']
 ##teamcity[testFailed name='EndsWith string matcher' message='Matchers.tests.cpp:<line number>|nexpression failed|n  CHECK_THAT( testStringForMatching(), EndsWith( "this", Catch::CaseSensitive::No ) )|nwith expansion:|n  "this string contains |'abc|' as a substring" ends with: "this" (case insensitive)|n']

tests/SelfTest/Baselines/xml.sw.approved.txt

@@ -4375,17 +4375,6 @@ C
     </Expression>
     <OverallResult success="true" skips="0"/>
   </TestCase>
-  <TestCase name="Empty tag is not allowed" filename="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp" >
-    <Expression success="true" type="REQUIRE_THROWS" filename="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp" >
-      <Original>
-        Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
-      </Original>
-      <Expanded>
-        Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
-      </Expanded>
-    </Expression>
-    <OverallResult success="true" skips="0"/>
-  </TestCase>
   <TestCase name="EndsWith string matcher" tags="[.][failing][matchers]" filename="tests/<exe-name>/UsageTests/Matchers.tests.cpp" >
     <Expression success="false" type="CHECK_THAT" filename="tests/<exe-name>/UsageTests/Matchers.tests.cpp" >
       <Original>
@@ -15670,7 +15659,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One false evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One false evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !AllTrue()
@@ -15712,7 +15701,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One false evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One false evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !AllTrue()
@@ -16020,7 +16009,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, AnyTrue()
@@ -16062,7 +16051,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, AnyTrue()
@@ -16370,7 +16359,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !NoneTrue()
@@ -16412,7 +16401,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !NoneTrue()
@@ -21203,6 +21192,6 @@ b1!
     </Section>
     <OverallResult success="true" skips="0"/>
   </TestCase>
-  <OverallResults successes="2049" failures="145" expectedFailures="32" skips="11"/>
+  <OverallResults successes="2048" failures="145" expectedFailures="32" skips="11"/>
-  <OverallResultsCases successes="309" failures="84" expectedFailures="11" skips="5"/>
+  <OverallResultsCases successes="308" failures="84" expectedFailures="11" skips="5"/>
 </Catch2TestRun>

tests/SelfTest/Baselines/xml.sw.multi.approved.txt

@@ -4375,17 +4375,6 @@ C
     </Expression>
     <OverallResult success="true" skips="0"/>
   </TestCase>
-  <TestCase name="Empty tag is not allowed" filename="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp" >
-    <Expression success="true" type="REQUIRE_THROWS" filename="tests/<exe-name>/IntrospectiveTests/Tag.tests.cpp" >
-      <Original>
-        Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
-      </Original>
-      <Expanded>
-        Catch::TestCaseInfo( "", { "fake test name", "[]" }, dummySourceLineInfo )
-      </Expanded>
-    </Expression>
-    <OverallResult success="true" skips="0"/>
-  </TestCase>
   <TestCase name="EndsWith string matcher" tags="[.][failing][matchers]" filename="tests/<exe-name>/UsageTests/Matchers.tests.cpp" >
     <Expression success="false" type="CHECK_THAT" filename="tests/<exe-name>/UsageTests/Matchers.tests.cpp" >
       <Original>
@@ -15670,7 +15659,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One false evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One false evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !AllTrue()
@@ -15712,7 +15701,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One false evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One false evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !AllTrue()
@@ -16020,7 +16009,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, AnyTrue()
@@ -16062,7 +16051,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to true" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, AnyTrue()
@@ -16370,7 +16359,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Basic usage" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !NoneTrue()
@@ -16412,7 +16401,7 @@ There is no extra whitespace here
       <OverallResults successes="1" failures="0" expectedFailures="0" skipped="false"/>
     </Section>
     <Section name="Contained type is convertible to bool" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
-      <Section name="One true evalutes to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
+      <Section name="One true evaluates to false" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
         <Expression success="true" type="REQUIRE_THAT" filename="tests/<exe-name>/UsageTests/MatchersRanges.tests.cpp" >
           <Original>
             data, !NoneTrue()
@@ -21202,6 +21191,6 @@ b1!
     </Section>
     <OverallResult success="true" skips="0"/>
   </TestCase>
-  <OverallResults successes="2049" failures="145" expectedFailures="32" skips="11"/>
+  <OverallResults successes="2048" failures="145" expectedFailures="32" skips="11"/>
-  <OverallResultsCases successes="309" failures="84" expectedFailures="11" skips="5"/>
+  <OverallResultsCases successes="308" failures="84" expectedFailures="11" skips="5"/>
 </Catch2TestRun>

tests/SelfTest/IntrospectiveTests/Details.tests.cpp

@@ -89,6 +89,47 @@ TEST_CASE("Optional comparison ops", "[optional][approvals]") {
     }
 }
 
+namespace {
+    struct MoveChecker {
+        bool has_moved = false;
+        MoveChecker() = default;
+        MoveChecker( MoveChecker const& rhs ) = default;
+        MoveChecker& operator=( MoveChecker const& rhs ) = default;
+        MoveChecker( MoveChecker&& rhs ) { rhs.has_moved = true; }
+        MoveChecker& operator=( MoveChecker&& rhs ) {
+            rhs.has_moved = true;
+            return *this;
+        }
+    };
+}
+
+TEST_CASE( "Optional supports move ops", "[optional][approvals]" ) {
+    using Catch::Optional;
+    MoveChecker a;
+    Optional<MoveChecker> opt_A( a );
+    REQUIRE_FALSE( a.has_moved );
+    REQUIRE_FALSE( opt_A->has_moved );
+
+    SECTION( "Move construction from element" ) {
+        Optional<MoveChecker> opt_B( CATCH_MOVE( a ) );
+        REQUIRE( a.has_moved );
+    }
+    SECTION( "Move assignment from element" ) {
+        opt_A = CATCH_MOVE( a );
+        REQUIRE( a.has_moved );
+    }
+    SECTION( "Move construction from optional" ) {
+        Optional<MoveChecker> opt_B( CATCH_MOVE( opt_A ) );
+        REQUIRE( opt_A->has_moved );
+    }
+    SECTION( "Move assignment from optional" ) {
+        Optional<MoveChecker> opt_B( opt_A );
+        REQUIRE_FALSE( opt_A->has_moved );
+        opt_B = CATCH_MOVE( opt_A );
+        REQUIRE( opt_A->has_moved );
+    }
+}
+
 TEST_CASE( "Decomposer checks that the argument is 0 when handling "
            "only-0-comparable types",
            "[decomposition][approvals]" ) {

tests/SelfTest/IntrospectiveTests/GeneratorsImpl.tests.cpp

@@ -412,6 +412,7 @@ TEST_CASE("GENERATE handles function (pointers)", "[generators][compilation][app
 
 TEST_CASE("GENERATE decays arrays", "[generators][compilation][approvals]") {
     auto str = GENERATE("abc", "def", "gh");
+    (void)str;
     STATIC_REQUIRE(std::is_same<decltype(str), const char*>::value);
 }
 

tests/SelfTest/IntrospectiveTests/InternalBenchmark.tests.cpp

@@ -22,6 +22,8 @@
 #include <catch2/benchmark/detail/catch_benchmark_function.hpp>
 #include <catch2/benchmark/detail/catch_estimate_clock.hpp>
 
+#include <numeric>
+
 namespace {
     struct manual_clock {
     public:
@@ -442,6 +444,6 @@ TEST_CASE("Failing benchmarks", "[!benchmark][.approvals]") {
 }
 
 TEST_CASE( "Failing benchmark respects should-fail",
-           "[!shouldfail][!benchmark][.approvals]" ) {
+           "[!shouldfail][!benchmark][approvals]" ) {
     BENCHMARK( "Asserting benchmark" ) { REQUIRE( 1 == 2 ); };
 }

tests/SelfTest/IntrospectiveTests/Tag.tests.cpp

@@ -98,7 +98,20 @@ TEST_CASE( "Test case with identical tags keeps just one", "[tags]" ) {
     REQUIRE( testCase.tags[0] == Tag( "tag1" ) );
 }
 
-TEST_CASE( "Empty tag is not allowed" ) {
+TEST_CASE("Mismatched square brackets in tags are caught and reported",
-    REQUIRE_THROWS( Catch::TestCaseInfo(
+          "[tags][approvals]") {
-        "", { "fake test name", "[]" }, dummySourceLineInfo ) );
+    using Catch::TestCaseInfo;
+    using Catch::Matchers::ContainsSubstring;
+            REQUIRE_THROWS_WITH( TestCaseInfo( "",
+                                       { "test with unclosed tag", "[abc" },
+                                       dummySourceLineInfo ),
+                         ContainsSubstring("registering test case 'test with unclosed tag'") );
+    REQUIRE_THROWS_WITH( TestCaseInfo( "",
+                      { "test with nested tags", "[abc[def]]" },
+                      dummySourceLineInfo ),
+        ContainsSubstring("registering test case 'test with nested tags'") );
+    REQUIRE_THROWS_WITH( TestCaseInfo( "",
+                      { "test with superfluous close tags", "[abc][def]]" },
+                      dummySourceLineInfo ),
+        ContainsSubstring("registering test case 'test with superfluous close tags'") );
 }

tests/SelfTest/UsageTests/Exception.tests.cpp

@@ -20,7 +20,7 @@
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wweak-vtables"
 #pragma clang diagnostic ignored "-Wmissing-noreturn"
-#pragma clang diagnostic ignored "-Wunreachable-code"
+#pragma clang diagnostic ignored "-Wunreachable-code-return"
 #endif
 
 namespace {

tests/SelfTest/UsageTests/MatchersRanges.tests.cpp

@@ -381,7 +381,7 @@ TEST_CASE("Usage of AllTrue range matcher", "[matchers][templated][quantifiers]"
             std::array<bool, 0> const data{};
             REQUIRE_THAT( data, AllTrue() );
         }
-        SECTION( "One false evalutes to false" ) {
+        SECTION( "One false evaluates to false" ) {
             std::array<bool, 5> const data{ { true, true, false, true, true } };
             REQUIRE_THAT( data, !AllTrue() );
         }
@@ -398,7 +398,7 @@ TEST_CASE("Usage of AllTrue range matcher", "[matchers][templated][quantifiers]"
                 { { true }, { true }, { true }, { true }, { true } } };
             REQUIRE_THAT( data, AllTrue() );
         }
-        SECTION( "One false evalutes to false" ) {
+        SECTION( "One false evaluates to false" ) {
             std::array<ConvertibleToBool, 5> const data{
                 { { true }, { true }, { false }, { true }, { true } } };
             REQUIRE_THAT( data, !AllTrue() );
@@ -446,7 +446,7 @@ TEST_CASE( "Usage of NoneTrue range matcher", "[matchers][templated][quantifiers
             std::array<bool, 0> const data{};
             REQUIRE_THAT( data, NoneTrue() );
         }
-        SECTION( "One true evalutes to false" ) {
+        SECTION( "One true evaluates to false" ) {
             std::array<bool, 5> const data{
                 { false, false, true, false, false } };
             REQUIRE_THAT( data, !NoneTrue() );
@@ -464,7 +464,7 @@ TEST_CASE( "Usage of NoneTrue range matcher", "[matchers][templated][quantifiers
                 { { true }, { true }, { true }, { true }, { true } } };
             REQUIRE_THAT( data, !NoneTrue() );
         }
-        SECTION( "One true evalutes to false" ) {
+        SECTION( "One true evaluates to false" ) {
             std::array<ConvertibleToBool, 5> const data{
                 { { false }, { false }, { true }, { false }, { false } } };
             REQUIRE_THAT( data, !NoneTrue() );
@@ -512,7 +512,7 @@ TEST_CASE( "Usage of AnyTrue range matcher", "[matchers][templated][quantifiers]
             std::array<bool, 0> const data{};
             REQUIRE_THAT( data, !AnyTrue() );
         }
-        SECTION( "One true evalutes to true" ) {
+        SECTION( "One true evaluates to true" ) {
             std::array<bool, 5> const data{
                 { false, false, true, false, false } };
             REQUIRE_THAT( data, AnyTrue() );
@@ -530,7 +530,7 @@ TEST_CASE( "Usage of AnyTrue range matcher", "[matchers][templated][quantifiers]
                 { { true }, { true }, { true }, { true }, { true } } };
             REQUIRE_THAT( data, AnyTrue() );
         }
-        SECTION( "One true evalutes to true" ) {
+        SECTION( "One true evaluates to true" ) {
             std::array<ConvertibleToBool, 5> const data{
                 { { false }, { false }, { true }, { false }, { false } } };
             REQUIRE_THAT( data, AnyTrue() );

tools/scripts/updateDocumentToC.py

@@ -287,7 +287,7 @@ def markdownToclify(
         Path to the markdown output file.
 
       min_toc_len: int (default: 2)
-        Miniumum number of entries to create a table of contents for.
+        Minimum number of entries to create a table of contents for.
 
       github: bool (default: False)
         Uses GitHub TOC syntax if True.