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Ian Lance Taylor 79ba1e44c7 cmd/cgo: mark stub functions as no_sanitize_thread
When the generated stub functions write back the results to the stack,
they can in some cases be writing to the same memory on the g0 stack.
There is no race here (assuming there is no race in the Go code), but
the thread sanitizer does not know that.  Turn off the thread sanitizer
for the stub functions to prevent false positive warnings.

Current clang suggests the no_sanitize("thread") attribute, but that
does not work with clang 3.6 or GCC.  clang 3.6, GCC, and current clang
all support the no_sanitize_thread attribute, so use that
unconditionally.

The test case and first version of the patch are from Dmitriy Vyukov.

Change-Id: I80ce92824c6c8cf88ea0fe44f21cf50cf62474c9
Reviewed-on: https://go-review.googlesource.com/23252
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-19 17:29:13 +00:00
.github doc: update issue template 2016-03-09 00:52:16 +00:00
api cmd/api: remove debug/pe replated changes from next.txt 2016-05-04 05:55:07 +00:00
doc doc/go1.7: add runtime.KeepAlive 2016-05-18 20:44:43 +00:00
lib/time all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
misc cmd/cgo: mark stub functions as no_sanitize_thread 2016-05-19 17:29:13 +00:00
src cmd/cgo: mark stub functions as no_sanitize_thread 2016-05-19 17:29:13 +00:00
test cmd/compile: large ptr literals must escape 2016-05-19 15:12:01 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/go: fail with nice error message on bad GOOS/GOARCH pair 2016-05-06 01:18:07 +00:00
AUTHORS A+C: add Andrew Werner (corporate CLA for Upthere, Inc) 2016-05-16 22:51:26 +00:00
CONTRIBUTING.md doc: use new Gerrit URL and mention our instance in CONTRIBUTING.md 2016-03-09 00:52:42 +00:00
CONTRIBUTORS A+C: add Andrew Werner (corporate CLA for Upthere, Inc) 2016-05-16 22:51:26 +00:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

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