[Bug tree-optimization/105329] [12/13 Regression] Bogus restrict warning when assigning 1-char string literal to std::string since r12-3347-g8af8abfbbace49e6

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105329

--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 53359
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53359&action=edit
gcc13-pr105329.patch

Untested workaround.