[Bug sanitizer/65479] sanitizer stack trace missing frames past #0 on powerpc64

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65479

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #35196|0                           |1
        is obsolete|                            |
  Attachment #35308|0                           |1
        is obsolete|                            |

--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Created attachment 35360
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35360&action=edit
Proposed patch.

The attached patch resolves all the Address Sanitizer test suite failures on
powerpc64 except for those that are subject to pr65643.  Tested on
powerpc64*-*-*-* and x86_64.