[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

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 55049
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55049&action=edit
patch for extra pointer difference patterns