[Bug libgcc/67336] Verify pointers during stack unwind

[tetra2005 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67336

Yuri Gribov <tetra2005 at gmail dot com> changed:

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                 CC|                            |tetra2005 at gmail dot com

--- Comment #4 from Yuri Gribov <tetra2005 at gmail dot com> ---
Posted RFC in https://gcc.gnu.org/ml/gcc-patches/2017-01/msg00793.html