diff options
Diffstat (limited to 'include/my_global.h')
| -rw-r--r-- | include/my_global.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/my_global.h b/include/my_global.h index ad86aeb749f..803315e3dcd 100644 --- a/include/my_global.h +++ b/include/my_global.h @@ -905,10 +905,20 @@ typedef SOCKET_SIZE_TYPE size_socket; #endif #ifdef HAVE_ISINF -/* isinf() can be used in both C and C++ code */ -#define my_isinf(X) isinf(X) +/* Check if C compiler is affected by GCC bug #39228 */ +#if !defined(__cplusplus) && defined(HAVE_BROKEN_ISINF) +/* Force store/reload of the argument to/from a 64-bit double */ +static inline double my_isinf(double x) +{ + volatile double t= x; + return isinf(t); +} #else -#define my_isinf(X) (!isfinite(X) && !isnan(X)) +/* System-provided isinf() is available and safe to use */ +#define my_isinf(X) isinf(X) +#endif +#else /* !HAVE_ISINF */ +#define my_isinf(X) (!finite(X) && !isnan(X)) #endif /* Define missing math constants. */ |