diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/fixunsxfti.c')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/fixunsxfti.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/contrib/compiler-rt/lib/builtins/fixunsxfti.c b/contrib/compiler-rt/lib/builtins/fixunsxfti.c index 42e5073..fb39d00 100644 --- a/contrib/compiler-rt/lib/builtins/fixunsxfti.c +++ b/contrib/compiler-rt/lib/builtins/fixunsxfti.c @@ -21,9 +21,8 @@ */ /* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes - * tu_int is a 64 bit integral type + * tu_int is a 128 bit integral type * value in long double is representable in tu_int or is negative - * (no range checking performed) */ /* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | @@ -38,6 +37,8 @@ __fixunsxfti(long double a) int e = (fb.u.high.s.low & 0x00007FFF) - 16383; if (e < 0 || (fb.u.high.s.low & 0x00008000)) return 0; + if ((unsigned)e > sizeof(tu_int) * CHAR_BIT) + return ~(tu_int)0; tu_int r = fb.u.low.all; if (e > 63) r <<= (e - 63); |
