[Bug middle-end/122035] Wrong behavior under -O2 and -O3 optimization

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122035

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 62438
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62438&action=edit
Self contained example using stringstream  instead of ifstream