[Bug lto/85248] [6/7/8 Regression] Miscompilation when using error function that returns

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85248

--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43884
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43884&action=edit
Patch for GCC 9