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f7e51c1320
go/misc/cgo
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Ian Lance Taylor f7e51c1320 runtime: adjust gsignal stack to current signal stack 
If non-Go code calls sigaltstack before a signal is received, use
sigaltstack to determine the current signal stack and set the gsignal
stack to use it.  This makes the Go runtime more robust in the face of
non-Go code.  We still can't handle a disabled signal stack or a signal
triggered with SA_ONSTACK clear, but we now give clear errors for those
cases.

Fixes #7227.
Update #9896.

Change-Id: Icb1607e01fd6461019b6d77d940e59b3aed4d258
Reviewed-on: https://go-review.googlesource.com/18102
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
2015-12-24 17:00:04 +00:00
..
errors cmd/cgo: map C unsigned char back to _Ctype_uchar in error messages 2015-12-16 22:13:17 +00:00
gmp misc/cgo/gmp: change pi.go to use standard Go copyright header 2015-12-11 13:29:46 +00:00
life misc/cgo/stdio: reenable tests 2015-12-05 21:24:30 +00:00
nocgo cmd/ld: really import runtime/cgo for external link 2014-05-20 21:36:50 -07:00
stdio misc/cgo/stdio: reenable tests 2015-12-05 21:24:30 +00:00
test runtime: adjust gsignal stack to current signal stack 2015-12-24 17:00:04 +00:00
testasan
testcarchive misc/cgo/testcarchive: skip test4 on darwin/{arm,arm64} 2015-12-22 16:16:02 +00:00
testcshared runtime: for c-archive/c-shared, don't install unnecessary signal handlers 2015-12-18 22:27:38 +00:00
testgodefs build: convert run.bash, run.bat, and run.rc into a Go program 2015-03-03 23:22:11 +00:00
testsanitizers misc/cgo/testsanitizers: check linux major/minor versions 2015-12-03 21:22:27 +00:00
testshared misc/cgo/testshared: add format specifier in Errorf calls 2015-11-21 10:19:16 +00:00
testsigfwd runtime: for c-archive/c-shared, don't install unnecessary signal handlers 2015-12-18 22:27:38 +00:00
testso cmd/dist: convert testso test into Go 2015-06-12 04:33:50 +00:00
testsovar misc/cgo/testsovar: needs the extern keyword to export variables on non-windows platforms 2015-07-21 18:10:57 +00:00
testtls