[PATCH v3] newlib: fix build with <gcc-5 versions
Mike Frysinger <[email protected]>
| Newsgroups | gmane.comp.lib.newlib |
|---|---|
| Message-ID | <[email protected]> |
__builtin_mul_overflow showed up with gcc-5, so stub it out for older versions. --- v3 - use style from Richard Earnshaw to avoid gcc-specific syntax newlib/libc/include/sys/cdefs.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h index da729092185c..79bce1d1d78d 100644 --- a/newlib/libc/include/sys/cdefs.h +++ b/newlib/libc/include/sys/cdefs.h @@ -416,6 +416,10 @@ #define __unreachable() ((void)0) #endif +#if !__GNUC_PREREQ__(5, 0) +#define __builtin_mul_overflow(a, b, size) (*(size) = (a) * (b), 0) +#endif + /* XXX: should use `#if __STDC_VERSION__ < 199901'. */ #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER) #define __func__ NULL -- 2.34.1