Copying a `ReusableStringStream` would lead to "double free" of
the stream, and thus it could be used in multiple places at the
same time, breaking the output.
ReusableStringStream holds a std::ostringstream internally, but only exposes the ostream interface.
It caches a pool of ostringstreams in a vector which is currently global, but will be made thread-local.
Altogether this should enable both runtime and compile-time benefits. although more work is needed to realise the compile time opportunities.
Swept:
`-Wpadded` in some places (where it caused extra size, instead of just
saying "hey, we padded struct at the end to align, just as standard says")
`-Wweak-vtables` everywhere (Clang)
`-Wexit-time-destructors` everywhere (Clang)
`-Wmissing-noreturn` everywhere (Clang)
The last three are enabled for Clang compilation going forward.
Also enabled `-Wunreachable-code` for Clang and GCC
This also introduces Catch::clog() method to allow embedded targets
to override std::clog usage with their own stream (presumably null-sink),
similarly to how Catch::cout() and Catch::cerr() are used.
Fixes#989
All C++11 toggles are now removed. What is left is either platform
specific (POSIX_SIGNALS, WINDOWS_SEH), or possibly still needed
(USE_COUNTER).
If current CLion is compatible with `__COUNTER__`, then we should also
force `__COUNTER__` usage.
Changed
* CATCH_AUTO_PTR -> std::unique_ptr
* CATCH_OVERRIDE -> override
* CATCH_NULL -> nullptr
* CATCH_NOEXCEPT -> noexcept
* CATCH_NOEXCEPT_IS -> noexcept
Removed
* CATCH_CONFIG_CPP11_UNIQUE_PTR
* CATCH_CONFIG_CPP11_SHUFFLE
* CATCH_CONFIG_CPP11_TYPE_TRAITS
* CATCH_CONFIG_CPP11_OVERRIDE
* CATCH_CONFIG_CPP11_LONG_LONG
* CATCH_CONFIG_CPP11_TUPLE
* CATCH_CONFIG_CPP11_IS_ENUM
* CATCH_CONFIG_CPP11_GENERATED_METHODS
* CATCH_CONFIG_CPP11_NOEXCEPT
* CATCH_CONFIG_CPP11_NULLPTR
* CATCH_CONFIG_VARIADIC_MACROS
- simpler, polymorphic hierarchy-based, approach
- less bitty conditionals spread across the code
- all resolved up-front so now config class is immutable
(it had evolved the way it was and in need of a clean-up sweep for a long time)
