diff options
Diffstat (limited to 'sysdeps/i386/bits/select.h')
| -rw-r--r-- | sysdeps/i386/bits/select.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/i386/bits/select.h b/sysdeps/i386/bits/select.h index 3912515a7f..e72b6f0a84 100644 --- a/sysdeps/i386/bits/select.h +++ b/sysdeps/i386/bits/select.h @@ -48,8 +48,14 @@ #else /* ! GNU CC */ +/* We don't use `memset' because this would require a prototype and + the array isn't too big. */ #define __FD_ZERO(set) \ - ((void) memset ((__ptr_t) (set), 0, sizeof (fd_set))) + do { \ + unsigned int __i; \ + for (__i = 0; __i < sizeof (__fd_set) / sizeof (__fd_mask); ++__i) \ + ((__fd_mask *) set)[__i] = '\0'; \ + } while (0) #define __FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d)) #define __FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d)) #define __FD_ISSET(d, set) ((set)->fds_bits[__FDELT(d)] & __FDMASK(d)) |