[Bug tree-optimization/109791] -Wstringop-overflow warning with -O3 and _GLIBCXX_USE_CXX11_ABI=0

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109791

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #55047|0                           |1
        is obsolete|                            |

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 55155
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55155&action=edit
patch unfolding such PHIs

Updated PHI unfolding patch.  Tests fine besides mentioned diagnostic
regressions.