diff options
Diffstat (limited to 'lib/Headers/tgmath.h')
| -rw-r--r-- | lib/Headers/tgmath.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/lib/Headers/tgmath.h b/lib/Headers/tgmath.h index 318e1185feee..34e26dcc05ec 100644 --- a/lib/Headers/tgmath.h +++ b/lib/Headers/tgmath.h @@ -22,12 +22,21 @@ * \*===----------------------------------------------------------------------===*/ -#ifndef __TGMATH_H -#define __TGMATH_H +#ifndef __CLANG_TGMATH_H +#define __CLANG_TGMATH_H /* C99 7.22 Type-generic math <tgmath.h>. */ #include <math.h> +/* + * Allow additional definitions and implementation-defined values on Apple + * platforms. This is done after #include <math.h> to avoid depcycle conflicts + * between libcxx and darwin in C++ modules builds. + */ +#if defined(__APPLE__) && __STDC_HOSTED__ && __has_include_next(<tgmath.h>) +# include_next <tgmath.h> +#else + /* C++ handles type genericity with overloading in math.h. */ #ifndef __cplusplus #include <complex.h> @@ -1371,4 +1380,5 @@ static long double #undef _TG_ATTRS #endif /* __cplusplus */ -#endif /* __TGMATH_H */ +#endif /* __has_include_next */ +#endif /* __CLANG_TGMATH_H */ |