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Fix build on macOS due to strict C++ standard compliance

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dmiller 2026-08-05 19:59:48 +00:00
parent 2d14a91452
commit 320d00efc8
1 changed files with 31 additions and 1 deletions
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32
nbase/nbase.h
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@ -179,8 +179,38 @@
# endif
#endif
/* Cross-platform array vs. pointer verification.
* Uses compile-time checks where possible, and falls back to a runtime
* assertion where the standard lacks compile-time capabilities.
*/
#if defined(__cplusplus)
/* C++11 and later (including MSVC C++11) */
# if __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L)
# include <type_traits>
# define ASSERT_IS_ARRAY(_Buf, _Msg) \
static_assert(std::is_array<decltype(_Buf)>::value, _Msg)
# else
/* C++98: Address comparison is not an ICE, fall back to runtime assert */
# include <cassert>
# define ASSERT_IS_ARRAY(_Buf, _Msg) \
assert(((void *)&(_Buf) == (void *)&(_Buf)[0]) && _Msg)
# endif
#else
/* C compilers supporting GCC/Clang extensions */
# if defined(__GNUC__) || defined(__clang__)
/* __typeof__ and __builtin_types_compatible_p resolve to an ICE */
# define ASSERT_IS_ARRAY(_Buf, _Msg) \
static_assert(!__builtin_types_compatible_p(__typeof__(_Buf), __typeof__(&(_Buf)[0])), _Msg)
# else
/* Standard C / MSVC C mode: No standard ICE for array deduction, use runtime assert */
# include <assert.h>
# define ASSERT_IS_ARRAY(_Buf, _Msg) \
assert(((void *)&(_Buf) == (void *)&(_Buf)[0]) && _Msg)
# endif
#endif
#define bufset(_Buf, _Str) do { \
static_assert((void *)&_Buf == (void *)&_Buf[0], "bufset called with pointer"); \
ASSERT_IS_ARRAY(_Buf, "bufset called with pointer"); \
static_assert(sizeof("" _Str) <= sizeof(_Buf), "buffer too small"); \
memcpy(_Buf, "" _Str, sizeof("" _Str)); \
} while (0)