tree b973f59e426ee4ebd14835a1eb493db106e4ec60
parent 014e84252cb37f897f8252d0557d6cb53ada594a
author Joshua Peraza <jperaza@chromium.org> 1597425939 -0700
committer Joshua Peraza <jperaza@chromium.org> 1597425999 +0000

processor: subtract 1 from return pointers while scanning

Each stackwalker subtracts the size of an instruction
from a frame's instruction pointer to determine which
instruction it was executing. This should also be done
for pointers examined while scanning for likely return
addresses to ensure that those pointers don't point
past the end of functions.

Bug: b/118634446
Change-Id: I043e3f1e51a2c0a3d99ed14bf18ea64dc98add44
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2356649
Reviewed-by: Mark Mentovai <mark@chromium.org>