diff options
Diffstat (limited to 'time/mktime.c')
| -rw-r--r-- | time/mktime.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/time/mktime.c b/time/mktime.c index 6d4db69..5144987 100644 --- a/time/mktime.c +++ b/time/mktime.c @@ -89,9 +89,11 @@ verify (long_int_is_wide_enough, INT_MAX == INT_MAX * (long_int) 2 / 2); implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift right in the usual way when A < 0, so SHR falls back on division if ordinary A >> B doesn't seem to be the usual signed shift. */ -#define SHR(a, b) \ - (-1 >> 1 == -1 \ - ? (a) >> (b) \ +#define SHR(a, b) \ + ((-1 >> 1 == -1 \ + && (long_int) -1 >> 1 == -1 \ + && ((time_t) -1 >> 1 == -1 || ! TYPE_SIGNED (time_t))) \ + ? (a) >> (b) \ : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0)) /* The extra casts in the following macros work around compiler bugs, |