[Bug sanitizer/80444] -fcompare-debug failures with -fsanitize-coverage=trace-pc

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80444

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 41209
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41209&action=edit
gcc7-pr80444.patch

Untested fix.