diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/configure b/configure index c8b5263db17..0aa010d3c65 100755 --- a/configure +++ b/configure @@ -14906,20 +14906,23 @@ main () int result = 0; time_t t, delta; int i, j; + int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1; + int time_t_signed = ! ((time_t) 0 < (time_t) -1); /* This test makes some buggy mktime implementations loop. Give up after 60 seconds; a mktime slower than that isn't worth using anyway. */ alarm (60); - for (;;) - { - t = (time_t_max << 1) + 1; - if (t <= time_t_max) - break; - time_t_max = t; - } - time_t_min = - ((time_t) ~ (time_t) 0 == (time_t) -1) - time_t_max; + time_t_max = (! time_t_signed + ? (time_t) -1 + : ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1) + * 2 + 1)); + time_t_min = (! time_t_signed + ? (time_t) 0 + : time_t_signed_magnitude + ? ~ (time_t) 0 + : ~ time_t_max); delta = time_t_max / 997; /* a suitable prime number */ for (i = 0; i < N_STRINGS; i++) |