[Bug tree-optimization/116332] -O2 makes c++ std::regex give zero-alloc warnings

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116332

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 58903
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58903&action=edit
unpreprocessed source just in case