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runtime: fix integer comparison in signal handling

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(sig is unsigned, so sig-1 >= 0 is always true.)

Fixes #11281.

Change-Id: I4b9d784da6e3cc80816f2d2f7228d5d8a237e2d5
Reviewed-on: https://go-review.googlesource.com/17457
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Russ Cox 2015-12-04 23:19:02 -05:00
parent c5a94ba24f
commit b9fde8605e
1 changed files with 2 additions and 2 deletions
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4
src/runtime/signal1_unix.go
View file

@ -228,11 +228,11 @@ func ensureSigM() {
for {
select {
case sig := <-enableSigChan:
if b := sig - 1; b >= 0 {
if b := sig - 1; sig > 0 {
sigBlocked[b/32] &^= (1 << (b & 31))
}
case sig := <-disableSigChan:
if b := sig - 1; b >= 0 {
if b := sig - 1; sig > 0 {
sigBlocked[b/32] |= (1 << (b & 31))
}
}