kc3-lang/SDL

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• Hash : 3bf7994f
  Author :
  Date : 2021-09-27T14:38:12
  

  Add and use `SDL_FALLTHROUGH` for fallthroughs Case fallthrough warnings can be suppressed using the __fallthrough__ compiler attribute. Unfortunately, not all compilers have this attribute, or even have __has_attribute to check if they have the __fallthrough__ attribute. [[fallthrough]] is also available in C++17 and the next C2x, but not everyone uses C++17 or C2x. So define the SDL_FALLTHROUGH macro to deal with those problems - if we are using C++17 or C2x, it expands to [[fallthrough]]; else if the compiler has __has_attribute and has the __fallthrough__ attribute, then it expands to __attribute__((__fallthrough__)); else it expands to an empty statement, with a /* fallthrough */ comment (it's a do {} while (0) statement, because users of this macro need to use a semicolon, because [[fallthrough]] and __attribute__((__fallthrough__)) require a semicolon). Clang before Clang 10 and GCC before GCC 7 have problems with using __attribute__ as a sole statement and warn about a "declaration not declaring anything", so fall back to using the /* fallthrough */ comment if we are using those older compiler versions. Applications using SDL are also free to use this macro (because it is defined in begin_code.h). All existing /* fallthrough */ comments have been replaced with this macro. Some of them were unnecessary because they were the last case in a switch; using SDL_FALLTHROUGH in those cases would result in a compile error on compilers that support __fallthrough__, for having a __attribute__((__fallthrough__)) statement that didn't immediately precede a case label.

• Files

• .github/
• .gitignore
• Android.mk
• BUGS.txt
• CMakeLists.txt
• CREDITS.txt
• INSTALL.txt
• LICENSE.txt
• Makefile.in
• Makefile.minimal
• Makefile.os2
• Makefile.pandora
• Makefile.psp
• Makefile.wiz
• README-SDL.txt
• README.md
• SDL2.spec.in
• SDL2Config.cmake
• TODO.txt
• VisualC-WinRT/
• VisualC/
• WhatsNew.txt
• Xcode-iOS/
• Xcode/
• acinclude/
• android-project-ant/
• android-project/
• autogen.sh
• build-scripts/
• cmake/
• cmake_uninstall.cmake.in
• configure
• configure.ac
• debian/
• docs/
• include/
• sdl2-config-version.cmake.in
• sdl2-config.cmake.in
• sdl2-config.in
• sdl2.m4
• sdl2.pc.in
• src/
• test/
• visualtest/
• wayland-protocols/

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• Git HTTP	https://git.kmx.io/kc3-lang/SDL.git
  Git SSH	git@git.kmx.io:kc3-lang/SDL.git
  Public access ?	public
  Description	Fork of https://github.com/libsdl-org/SDL
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