[Bug gcov-profile/78783] gcov-tool fails in gcov_read_counter_mem

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78783

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 41194
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41194&action=edit
Untested patch