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runtime: don't restore the alternate signal stack on ios

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The alternative signal stack doesn't work on ios, so the setup of
the alternative stack was skipped. The corresponding unminitSignals
was effectively a no-op on ios until CL 70130. Skip unminitSignals
on ios to restore the previous behaviour.

For the ios builders.

Change-Id: I5692ca7f5997e6b9d10cc5f2383a5a37c42b133c
Reviewed-on: https://go-review.googlesource.com/70270
Run-TryBot: Elias Naur <elias.naur@gmail.com>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Elias Naur 2017-10-12 18:41:06 +02:00
parent 6054f87f3a
commit 764a6ac29e
1 changed files with 5 additions and 1 deletions
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6
src/runtime/os_darwin.go
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@ -188,7 +188,11 @@ func minit() {
// Called from dropm to undo the effect of an minit.
//go:nosplit
func unminit() {
unminitSignals()
// The alternate signal stack is buggy on arm and arm64.
// See minit.
if GOARCH != "arm" && GOARCH != "arm64" {
unminitSignals()
}
}
// Mach IPC, to get at semaphores