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Make clang++ happier when using G_STATIC_ASSERT

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clang++ says it supports _Static_assert but then will
complain that it's a C11 extension and that you should not use
it in C++ code (which imho is fair enough)

So try to detect a C++ compiler first and then the C compiler,
similarly to what is done for the G_NORETURN case
This commit is contained in:
Albert Astals Cid 2023-04-01 11:35:25 +02:00
parent 4263cd8cbb
commit 925d2b3b1f
1 changed files with 4 additions and 4 deletions
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8
glib/gmacros.h
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@ -863,18 +863,18 @@
#ifndef __GI_SCANNER__ /* The static assert macro really confuses the introspection parser */
#define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2
#define G_PASTE(identifier1,identifier2) G_PASTE_ARGS (identifier1, identifier2)
#if (G_C_STD_CHECK_VERSION (11) || \
#if G_CXX_STD_CHECK_VERSION (11)
#define G_STATIC_ASSERT(expr) static_assert (expr, "Expression evaluates to false")
#elif (G_C_STD_CHECK_VERSION (11) || \
g_macro__has_feature(c_static_assert) || g_macro__has_extension(c_static_assert))
#define G_STATIC_ASSERT(expr) _Static_assert (expr, "Expression evaluates to false")
#elif G_CXX_STD_CHECK_VERSION (11)
#define G_STATIC_ASSERT(expr) static_assert (expr, "Expression evaluates to false")
#else
#ifdef __COUNTER__
#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __COUNTER__)[(expr) ? 1 : -1] G_GNUC_UNUSED
#else
#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __LINE__)[(expr) ? 1 : -1] G_GNUC_UNUSED
#endif
#endif /* G_C_STD_CHECK_VERSION (11) */
#endif /* G_CXX_STD_CHECK_VERSION (11) */
#define G_STATIC_ASSERT_EXPR(expr) ((void) sizeof (char[(expr) ? 1 : -1]))
#endif /* !__GI_SCANNER__ */