diff options
Diffstat (limited to 'src/cmd/gc/mparith2.c')
| -rw-r--r-- | src/cmd/gc/mparith2.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/cmd/gc/mparith2.c b/src/cmd/gc/mparith2.c index 9b2f664f7..5cf98c62c 100644 --- a/src/cmd/gc/mparith2.c +++ b/src/cmd/gc/mparith2.c @@ -300,13 +300,21 @@ mpmulfixfix(Mpint *a, Mpint *b) for(i=0; i<na; i++) { x = *a1++; for(j=0; j<Mpscale; j++) { - if(x & 1) + if(x & 1) { + if(s.ovf) { + q.ovf = 1; + goto out; + } mpaddfixfix(&q, &s, 1); + if(q.ovf) + goto out; + } mplsh(&s, 1); x >>= 1; } } +out: q.neg = a->neg ^ b->neg; mpmovefixfix(a, &q); if(a->ovf) |