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Eric Daniels d9b006a705 runtime/traceback: support tracking goroutine ancestor tracebacks with GODEBUG="tracebackancestors=N"
Currently, collecting a stack trace via runtime.Stack captures the stack for the
immediately running goroutines. This change extends those tracebacks to include
the tracebacks of their ancestors. This is done with a low memory cost and only
utilized when debug option tracebackancestors is set to a value greater than 0.

Resolves #22289

Change-Id: I7edacc62b2ee3bd278600c4a21052c351f313f3a
Reviewed-on: https://go-review.googlesource.com/70993
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2018-04-13 20:42:38 +00:00
.github github: update Pull Request template 2018-02-21 02:07:46 +00:00
api api: remove unnecessary lines from except.txt 2018-04-09 21:19:11 +00:00
doc doc/install.html: address comments from review of previous edit 2018-04-11 05:24:49 +00:00
lib/time all: use HTTPS for iana.org links 2018-02-13 18:36:48 +00:00
misc misc/ios: speed up the iOS exec wrapper 2018-04-12 19:30:54 +00:00
src runtime/traceback: support tracking goroutine ancestor tracebacks with GODEBUG="tracebackancestors=N" 2018-04-13 20:42:38 +00:00
test all: use new softfloat on GOARM=5 2018-04-13 16:39:39 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: update my name and spelling 2018-02-21 04:12:57 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS C: add Filippo Valsorda's @golang.org email 2018-03-12 22:29:04 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
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README.md README: update number of contributors 2018-04-03 22:10:32 +00:00
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