[Bug tree-optimization/94015] [10 Regression] Another assignment incorrectly omitted by -foptimize-strlen

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94015

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Assignee|msebor at gcc dot gnu.org          |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47959
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47959&action=edit
gcc10-pr94015.patch

Untested fix.  There are various other issues, e.g. allnonnul result isn't used
anywhere (storing_all_nonzero_p being a write only var), even the description
is weird:
  /* STORING_NONZERO_P is true iff not all stored characters are zero.
     STORING_ALL_NONZERO_P is true if all stored characters are zero.
     STORING_ALL_ZEROS_P is true iff all stored characters are zero.
     Both are false when it's impossible to determine which is true.  */