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cmd/cc: fix undefined behaviour warning in bv.c 

Fixes warning

# _/home/dfc/go/misc/cgo/test/backdoor
/home/dfc/go/src/cmd/cc/bv.c:43:11: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/136330043
This commit is contained in:
Dave Cheney 2014-09-08 16:06:41 +10:00
parent 6a2e844f51
commit 4a40fb1979
1 changed files with 1 additions and 1 deletions
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2
src/cmd/cc/bv.c
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@ -40,6 +40,6 @@ bvset(Bvec *bv, int32 i)
if(i < 0 || i >= bv->n)
fatal(Z, "bvset: index %d is out of bounds with length %d\n", i, bv->n);
mask = 1 << (i % WORDBITS);
mask = 1UL << (i % WORDBITS);
bv->b[i / WORDBITS] |= mask;
}