[Bug tree-optimization/125202] [14/15/16/17 Regression] wrong code hangs at -O1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125202

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 64389
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64389&action=edit
testcase that traps instead of an infinite loop when it goes wrong