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go / go / 687d9d5d78f8a2d09b2052e73be0c83740e17fda
commit687d9d5d78f8a2d09b2052e73be0c83740e17fda[log] [tgz]
authorAustin Clements <austin@google.com>Thu Oct 13 10:44:57 2016 -0400
committerAustin Clements <austin@google.com>Mon Oct 17 18:56:09 2016 +0000
treed8aa74b0a3aea918b939be3aad6fda4c5d4e0946
parent0ba3c607dfcc90072191375d57c4059be1ae96c7 [diff]
runtime: print a message on bad morestack

If morestack runs on the g0 or gsignal stack, it currently performs
some abort operation that typically produces a signal (e.g., it does
an INT $3 on x86). This is useful if you're running in a debugger, but
if you're not, the runtime tries to trap this signal, which is likely
to send the program into a deeper spiral of collapse and lead to very
confusing diagnostic output.

Help out people trying to debug without a debugger by making morestack
print an informative message before blowing up.

Change-Id: I2814c64509b137bfe20a00091d8551d18c2c4749
Reviewed-on: https://go-review.googlesource.com/31133
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
9 files changed
tree: d8aa74b0a3aea918b939be3aad6fda4c5d4e0946
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
README.md

The Go Programming Language

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For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:

export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

See https://golang.org/doc/install or doc/install.html for more details.