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go / go / bb6fb929d6e5c2e401f4e3ebe2b7505845970e4b
commitbb6fb929d6e5c2e401f4e3ebe2b7505845970e4b[log] [tgz]
authorAustin Clements <austin@google.com>Wed Nov 18 16:48:22 2015 -0500
committerAustin Clements <austin@google.com>Thu Dec 03 03:53:35 2015 +0000
tree63033144d562b8de23f226a37448f6245bcb1b34
parent08b80ca880278b2eed519f6227cee12d87090f7f [diff]
runtime: fix sanity check in stackBarrier

stackBarrier on amd64 sanity checks that it's unwinding the correct
entry in the stack barrier array. However, this check is wrong in two
ways that make it unlikely to catch anything, right or wrong:

1) It checks that savedLRPtr == SP, but, in fact, it should be that
   savedLRPtr+8 == SP because the RET that returned to stackBarrier
   popped the saved LR. However, we didn't notice this check was wrong
   because,

2) the sense of the conditional branch is also wrong.

Fix both of these.

Change-Id: I38ba1f652b0168b5b2c11b81637656241262af7c
Reviewed-on: https://go-review.googlesource.com/17039
Reviewed-by: Russ Cox <rsc@golang.org>
1 file changed
tree: 63033144d562b8de23f226a37448f6245bcb1b34
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
README.md

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