[Bug gcov-profile/84879] New: GCOV tool crash when invoked for intermediate format

["marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84879

            Bug ID: 84879
           Summary: GCOV tool crash when invoked for intermediate format
           Product: gcc
           Version: unknown
               URL: https://github.com/linux-test-project/lcov/issues/38#i
                    ssuecomment-373348413
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Extracted from github issue:

$ echo "int main() { return 0; }" > t.c
$ gcc t.c -o t --coverage
$ ./t
$ gcov -iab t.c
File 't.c'
Lines executed:100.00% of 1
No branches
No calls
Creating 't.c.gcov'
Segmentation fault (core dumped)