Redo build matrix on .travis for C++14 and up

* Use Xenial as the base distribution
* Remove C++11 builds
* Add a lot more C++14 builds
* Add some C++17 builds
* Include newer versions of Clang and GCC

.conan/test_package/CMakeLists.txt

@@ -8,4 +8,4 @@ find_package(Catch2 REQUIRED CONFIG)
 
 add_executable(${PROJECT_NAME} test_package.cpp)
 target_link_libraries(${PROJECT_NAME} CONAN_PKG::Catch2)
-set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 11)
+set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 14)

.travis.yml

@@ -1,4 +1,6 @@
 language: cpp
+dist: xenial
+
 
 branches:
   except:
@@ -6,42 +8,34 @@ branches:
 
 common_sources: &all_sources
   - ubuntu-toolchain-r-test
-  - llvm-toolchain-trusty
-  - llvm-toolchain-trusty-3.9
-  - llvm-toolchain-trusty-4.0
+  - llvm-toolchain-xenial
+  - llvm-toolchain-xenial-3.8
+  - llvm-toolchain-xenial-3.9
+  - llvm-toolchain-xenial-4.0
   - llvm-toolchain-xenial-5.0
   - llvm-toolchain-xenial-6.0
+  - llvm-toolchain-xenial-7
+  - llvm-toolchain-xenial-8
+
 
 matrix:
   include:
-
-    # 1/ Linux Clang Builds
+    # Clang builds
     - os: linux
       compiler: clang
       addons:
-        apt:
-          sources: *all_sources
-          packages: ['clang-3.5']
-      env: COMPILER='clang++-3.5'
+          apt:
+              sources: *all_sources
+              packages: ['clang-3.8']
+      env: COMPILER='clang++-3.8' CPP14=1
 
     - os: linux
       compiler: clang
       addons:
         apt:
           sources: *all_sources
-          packages: ['clang-3.6']
-      env: COMPILER='clang++-3.6'
-
-    # Clang 3.7 is intentionally skipped as we cannot get it easily on
-    # TravisCI container
-
-    - os: linux
-      compiler: clang
-      addons:
-        apt:
-          sources: *all_sources
-          packages: ['lcov', 'clang-3.8']
-      env: COMPILER='clang++-3.8'
+          packages: ['clang-3.8', 'lcov']
+      env: COMPILER='clang++-3.8' CPP14=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
 
     - os: linux
       compiler: clang
@@ -49,93 +43,6 @@ matrix:
           apt:
               sources: *all_sources
               packages: ['clang-3.9']
-      env: COMPILER='clang++-3.9'
-
-    - os: linux
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-4.0']
-      env: COMPILER='clang++-4.0'
-
-    - os: linux
-      dist: xenial
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-5.0']
-      env: COMPILER='clang++-5.0'
-
-    - os: linux
-      dist: xenial
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-6.0']
-      env: COMPILER='clang++-6.0'
-
-    # 2/ Linux GCC Builds
-    - os: linux
-      compiler: gcc
-      addons:
-        apt:
-          sources: *all_sources
-          packages: ['g++-4.9']
-      env: COMPILER='g++-4.9'
-
-    - os: linux
-      compiler: gcc
-      addons:
-        apt:
-          sources: *all_sources
-          packages: ['g++-5']
-      env: COMPILER='g++-5'
-
-    - os: linux
-      compiler: gcc
-      addons: &gcc6
-        apt:
-          sources: *all_sources
-          packages: ['g++-6']
-      env: COMPILER='g++-6'
-
-    - os: linux
-      compiler: gcc
-      addons: &gcc7
-        apt:
-          sources: *all_sources
-          packages: ['g++-7']
-      env: COMPILER='g++-7'
-
-    - os: linux
-      compiler: gcc
-      addons: &gcc8
-        apt:
-          sources: *all_sources
-          packages: ['g++-8']
-      env: COMPILER='g++-8'
-
-    # 3b/ Linux C++14 Clang builds
-    # Note that we need newer libstdc++ for C++14 support
-    - os: linux
-      compiler: clang
-      addons:
-          apt:
-              packages: ['clang-3.8', 'libstdc++-6-dev']
-              sources:
-                  - ubuntu-toolchain-r-test
-                  - llvm-toolchain-trusty
-      env: COMPILER='clang++-3.8' CPP14=1
-
-    - os: linux
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-3.9', 'libstdc++-6-dev']
       env: COMPILER='clang++-3.9' CPP14=1
 
     - os: linux
@@ -143,45 +50,100 @@ matrix:
       addons:
           apt:
               sources: *all_sources
-              packages: ['clang-4.0', 'libstdc++-6-dev']
+              packages: ['clang-4.0']
       env: COMPILER='clang++-4.0' CPP14=1
 
     - os: linux
-      dist: xenial
       compiler: clang
       addons:
           apt:
               sources: *all_sources
-              packages: ['clang-5.0', 'libstdc++-6-dev']
+              packages: ['clang-5.0']
       env: COMPILER='clang++-5.0' CPP14=1
 
     - os: linux
-      dist: xenial
       compiler: clang
       addons:
           apt:
               sources: *all_sources
-              packages: ['clang-6.0', 'libstdc++-6-dev']
+              packages: ['clang-6.0']
       env: COMPILER='clang++-6.0' CPP14=1
 
+    - os: linux
+      compiler: clang
+      addons:
+          apt:
+              sources: *all_sources
+              packages: ['clang-6.0', 'libstdc++-8-dev']
+      env: COMPILER='clang++-6.0' CPP17=1
 
-    # 4a/ Linux C++14 GCC builds
+    - os: linux
+      compiler: clang
+      addons:
+          apt:
+              sources: *all_sources
+              packages: ['clang-7']
+      env: COMPILER='clang++-7' CPP14=1
+
+    - os: linux
+      compiler: clang
+      addons:
+          apt:
+              sources: *all_sources
+              packages: ['clang-8']
+      env: COMPILER='clang++-8' CPP14=1
+
+    - os: linux
+      compiler: clang
+      addons:
+          apt:
+              sources: *all_sources
+              packages: ['clang-8', 'libstdc++-8-dev']
+      env: COMPILER='clang++-8' CPP17=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
+
+
+    # GCC builds
     - os: linux
       compiler: gcc
-      addons: *gcc6
+      addons:
+        apt:
+          sources: *all_sources
+          packages: ['g++-4.9']
+      env: COMPILER='g++-4.9' CPP14=1
+
+    - os: linux
+      compiler: gcc
+      addons:
+        apt:
+          sources: *all_sources
+          packages: ['g++-5']
+      env: COMPILER='g++-5' CPP14=1
+
+    - os: linux
+      compiler: gcc
+      addons:
+        apt:
+          sources: *all_sources
+          packages: ['g++-6']
       env: COMPILER='g++-6' CPP14=1
 
     - os: linux
       compiler: gcc
-      addons: *gcc7
-      env: COMPILER='g++-7' CPP14=1
+      addons:
+        apt:
+          sources: *all_sources
+          packages: ['g++-7', 'lcov']
+      env: COMPILER='g++-7' CPP14=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
 
     - os: linux
       compiler: gcc
-      addons: *gcc8
-      env: COMPILER='g++-8' CPP14=1
+      addons:
+        apt:
+          sources: *all_sources
+          packages: ['g++-8']
+      env: COMPILER='g++-8' CPP17=1
 
-    # 5/ OSX Clang Builds
+    # OSX Clang Builds
     - os: osx
       osx_image: xcode9.4
       compiler: clang
@@ -203,87 +165,20 @@ matrix:
       env: COMPILER='clang++' CPP14=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
 
 
-    # 6/ Special builds -- examples, coverage, valgrind, etc.
-    - os: linux
-      compiler: gcc
-      addons:
-        apt:
-          sources: *all_sources
-          packages: ['lcov', 'g++-7']
-      env: COMPILER='g++-7' CPP14=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
 
-    - os: linux
-      compiler: clang
-      addons:
-        apt:
-          packages: ['clang-3.8', 'lcov']
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty
-      env: COMPILER='clang++-3.8' EXAMPLES=1 COVERAGE=1 EXTRAS=1
-
-    - os: linux
-      compiler: gcc
-      addons:
-        apt:
-          sources: *all_sources
-          packages: ['valgrind', 'lcov', 'g++-7']
-      env: COMPILER='g++-7' CPP14=1 VALGRIND=1
-
-    # 7/ C++17 builds
-    - os: linux
-      compiler: gcc
-      addons: *gcc7
-      env: COMPILER='g++-7' CPP17=1
-
-    - os: linux
-      compiler: gcc
-      addons: *gcc7
-      env: COMPILER='g++-7' EXAMPLES=1 COVERAGE=1 EXTRAS=1 CPP17=1
-
-    - os: linux
-      dist: xenial
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-6.0', 'libstdc++-8-dev']
-      env: COMPILER='clang++-6.0' CPP17=1
-
-    - os: linux
-      dist: xenial
-      compiler: clang
-      addons:
-          apt:
-              sources: *all_sources
-              packages: ['clang-6.0', 'libstdc++-8-dev']
-      env: COMPILER='clang++-6.0' CPP17=1 EXAMPLES=1 COVERAGE=1 EXTRAS=1
-
-    # 8/ Conan
+    # Special builds, e.g. conan
     - language: python
       python:
         - "3.7"
-      dist: xenial
       install:
         - pip install conan-package-tools
       env:
         - CONAN_GCC_VERSIONS=8
         - CONAN_DOCKER_IMAGE=conanio/gcc8
+        - CPP14=1
       script:
         - python .conan/build.py
 
-install:
-  - DEPS_DIR="${TRAVIS_BUILD_DIR}/deps"
-  - mkdir -p ${DEPS_DIR} && cd ${DEPS_DIR}
-  - |
-    if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
-      CMAKE_URL="http://cmake.org/files/v3.8/cmake-3.8.2-Linux-x86_64.tar.gz"
-      mkdir cmake && travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake
-      export PATH=${DEPS_DIR}/cmake/bin:${PATH}
-    elif [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
-        which cmake || brew install cmake;
-    fi
-
 before_script:
   - export CXX=${COMPILER}
   - cd ${TRAVIS_BUILD_DIR}
@@ -296,7 +191,7 @@ before_script:
     elif [[ ${CPP14} -eq 1 ]]; then
       export CPP_STANDARD=14
     else
-      export CPP_STANDARD=11
+      travis_terminate 4;
     fi
 
     # Use Debug builds for running Valgrind and building examples

examples/231-Cfg-OutputStreams.cpp

@@ -10,11 +10,12 @@
 #define CATCH_CONFIG_MAIN
 #include <catch2/catch.hpp>
 
+
 class out_buff : public std::stringbuf {
     std::FILE* m_stream;
 public:
-    out_buff(std::FILE* stream) :m_stream(stream) {}
-    ~out_buff() { pubsync(); }
+    out_buff(std::FILE* stream):m_stream(stream) {}
+    ~out_buff();
     int sync() {
         int ret = 0;
         for (unsigned char c : str()) {
@@ -29,6 +30,12 @@ public:
     }
 };
 
+out_buff::~out_buff() { pubsync(); }
+
+#if defined(__clang__)
+#pragma clang diagnostic ignored "-Wexit-time-destructors" // static variables in cout/cerr/clog
+#endif
+
 namespace Catch {
     std::ostream& cout() {
         static std::ostream ret(new out_buff(stdout));

examples/301-Gen-MapTypeConversion.cpp

@@ -22,15 +22,17 @@ public:
         }
     }
 
-    std::string const& get() const override {
-        return m_line;
-    }
+    std::string const& get() const override;
     
     bool next() override {
         return !!std::getline(m_stream, m_line);
     }
 };
 
+std::string const& LineGenerator::get() const {
+    return m_line;
+}
+
 // This helper function provides a nicer UX when instantiating the generator
 // Notice that it returns an instance of GeneratorWrapper<std::string>, which
 // is a value-wrapper around std::unique_ptr<IGenerator<std::string>>.

projects/SelfTest/UsageTests/ToStringVariant.tests.cpp

@@ -9,12 +9,12 @@
 // We need 2 types with non-trivial copies/moves
 struct MyType1 {
     MyType1() = default;
-    MyType1(MyType1 const&) { throw 1; }
+    [[noreturn]] MyType1(MyType1 const&) { throw 1; }
     MyType1& operator=(MyType1 const&) { throw 3; }
 };
 struct MyType2 {
     MyType2() = default;
-    MyType2(MyType2 const&) { throw 2; }
+    [[noreturn]] MyType2(MyType2 const&) { throw 2; }
     MyType2& operator=(MyType2 const&) { throw 4; }
 };