[Bug tree-optimization/83671] Fix for false positive reported by -Wstringop-overflow does not work at -O1

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83671

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

           What    |Removed                     |Added
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           Keywords|                            |patch
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch committed in r256457.