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Ian Lance Taylor be1ef46775 runtime: add optional expensive check for invalid cgo pointer passing
If you set GODEBUG=cgocheck=2 the runtime package will use the write
barrier to detect cases where a Go program writes a Go pointer into
non-Go memory.  In conjunction with the existing cgo checks, and the
not-yet-implemented cgo check for exported functions, this should
reliably detect all cases (that do not import the unsafe package) in
which a Go pointer is incorrectly shared with C code.  This check is
optional because it turns on the write barrier at all times, which is
known to be expensive.

Update #12416.

Change-Id: I549d8b2956daa76eac853928e9280e615d6365f4
Reviewed-on: https://go-review.googlesource.com/16899
Reviewed-by: Russ Cox <rsc@golang.org>
2015-11-16 18:39:06 +00:00
api api: update next.txt 2015-11-13 09:26:18 +00:00
doc cmd/dist: default to clang, not gcc, on freebsd 2015-11-14 03:35:41 +00:00
lib/time lib/time: update to IANA release 2015e. 2015-07-22 02:56:31 +00:00
misc runtime: add optional expensive check for invalid cgo pointer passing 2015-11-16 18:39:06 +00:00
src runtime: add optional expensive check for invalid cgo pointer passing 2015-11-16 18:39:06 +00:00
test cmd/compile/internal/gc: recursive-descent parser 2015-11-13 14:53:57 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore runtime: break out system-specific constants into package sys 2015-11-12 17:04:45 +00:00
AUTHORS A+C: automated updates 2015-11-13 14:07:05 +00:00
CONTRIBUTING.md doc: suggest security@golang.org for reporting security issues 2015-06-26 09:53:36 +00:00
CONTRIBUTORS A+C: add Steve Newman (Google CLA) 2015-11-13 15:51:00 +00:00
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README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
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