[Bug fortran/57801] New: Waste work in resolve_variable()

[pchang9 at cs dot wisc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57801

            Bug ID: 57801
           Summary: Waste work in resolve_variable()
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pchang9 at cs dot wisc.edu
                CC: nistor1 at illinois dot edu

The problem appears in revision 200588 in version 4.9.

In method "resolve_variable()" in gcc/fortran/resolve.c, the loop on line 4908
should break immediately after "seen" is set to "true". All the iterations
after "seen" set to "true" do not perform any useful work, at best they just
set "seen" again to "true".