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Cherry Zhang 0ccdcb2102 runtime: crash the GC when clobberdead pointer is seen
When -clobberdead compiler flag is set, the compiler inserts
instructions that set dead slots a specific value. If the GC sees
this value as a live pointer, something is probably wrong. Crash.

Only do this on AMD64 for now, as it is the only platform where
compiler's clobberdead mode is implemented. And on AMD64 the
clobberdead address can never be a valid address.

Change-Id: Ica687b132b5d3ba2a062500d13264fa730405d11
Reviewed-on: https://go-review.googlesource.com/c/go/+/310330
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-20 01:47:04 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api syscall: restore broken GetQueuedCompletionStatus signature but make it not crash 2021-02-24 23:35:00 +00:00
doc doc: add release note for module deprecation 2021-04-16 14:13:38 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc runtime, cgo/test: improve debugging output 2021-04-13 23:56:27 +00:00
src runtime: crash the GC when clobberdead pointer is seen 2021-04-20 01:47:04 +00:00
test cmd/compile: reduce redundant register moves for regabi calls 2021-04-19 16:21:39 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add new e-mail addresses for Andy Pan 2021-03-12 02:56:04 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add new e-mail addresses for Andy Pan 2021-03-12 02:56:04 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: pull gopher image from website 2021-02-16 18:25:10 +00:00
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

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