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-rw-r--r--src/cmd/5g/reg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmd/5g/reg.c b/src/cmd/5g/reg.c
index 5b25adaf4..712841329 100644
--- a/src/cmd/5g/reg.c
+++ b/src/cmd/5g/reg.c
@@ -393,7 +393,7 @@ loop2:
for(z=0; z<BITS; z++)
bit.b[z] = (r->refahead.b[z] | r->calahead.b[z]) &
~(externs.b[z] | params.b[z] | addrs.b[z] | consts.b[z]);
- if(bany(&bit) & !r->f.refset) {
+ if(bany(&bit) && !r->f.refset) {
// should never happen - all variables are preset
if(debug['w'])
print("%L: used and not set: %Q\n", r->f.prog->lineno, bit);