[Bug gcov-profile/80911] gcov failed: gcno corrupted

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80911

--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 41436
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41436&action=edit
Candidate patch

Please test the patch.