diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/fixunsxfsi.c')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/fixunsxfsi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/contrib/compiler-rt/lib/builtins/fixunsxfsi.c b/contrib/compiler-rt/lib/builtins/fixunsxfsi.c index df0a18e..c3c70f7 100644 --- a/contrib/compiler-rt/lib/builtins/fixunsxfsi.c +++ b/contrib/compiler-rt/lib/builtins/fixunsxfsi.c @@ -23,7 +23,6 @@ /* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes * su_int is a 32 bit integral type * value in long double is representable in su_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 @@ __fixunsxfsi(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(su_int) * CHAR_BIT) + return ~(su_int)0; return fb.u.low.s.high >> (31 - e); } |
