[Bug fortran/69495] New: unused-label warning does not tell which flag triggered it

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69495

            Bug ID: 69495
           Summary: unused-label warning does not tell which flag
                    triggered it
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: janus at gcc dot gnu.org
  Target Milestone: ---

Trivial test case:


100  print *, "test"
end


Compiling this with -Wall or -Wunused-label yields:


 100  print *, "test"
   1

Warning: Label 100 at (1) defined but not used


As for other warnings, the name of the corresponding flag should be mentioned!