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Always define SDL_COMPILE_TIME_ASSERT as static_assert() in C++

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Apparently some versions of gcc will define __STDC_VERSION__ even when compiling in C++ mode.

Fixes https://github.com/libsdl-org/SDL/issues/6078
This commit is contained in:
Sam Lantinga 2022-08-18 16:05:22 -07:00
parent 3bae2d57da
commit f6b81125b3
1 changed files with 12 additions and 4 deletions
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16
include/SDL_stdinc.h
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@ -373,14 +373,22 @@ typedef uint64_t Uint64;
#endif
#endif /* SDL_DISABLE_ANALYZE_MACROS */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
#define SDL_COMPILE_TIME_ASSERT(name, x) _Static_assert(x, #x)
#elif defined(__cplusplus) && (__cplusplus >= 201103L)
#ifndef SDL_COMPILE_TIME_ASSERT
#if defined(__cplusplus)
#if (__cplusplus >= 201103L)
#define SDL_COMPILE_TIME_ASSERT(name, x) static_assert(x, #x)
#else /* universal, but may trigger -Wunused-local-typedefs */
#endif
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
#define SDL_COMPILE_TIME_ASSERT(name, x) _Static_assert(x, #x)
#endif
#endif /* !SDL_COMPILE_TIME_ASSERT */
#ifndef SDL_COMPILE_TIME_ASSERT
/* universal, but may trigger -Wunused-local-typedefs */
#define SDL_COMPILE_TIME_ASSERT(name, x) \
typedef int SDL_compile_time_assert_ ## name[(x) * 2 - 1]
#endif
/** \cond */
#ifndef DOXYGEN_SHOULD_IGNORE_THIS
SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);