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-rw-r--r--src/cmd/6g/reg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmd/6g/reg.c b/src/cmd/6g/reg.c
index 02945fb401..5e3a198186 100644
--- a/src/cmd/6g/reg.c
+++ b/src/cmd/6g/reg.c
@@ -844,7 +844,7 @@ prop(Reg *r, Bits ref, Bits cal)
if(v == v1 || ((cal.b[j/32]>>(j&31))&1) == 0) {
for(; v1 != nil; v1 = v1->nextinnode) {
j = v1 - var;
- cal.b[j/32] |= 1<<(j&31);
+ cal.b[j/32] |= 1UL<<(j&31);
}
}
}