re PR fortran/57469 (Erroneous warning for unused dummy arguments used in namelist)

2013-07-08  Tobias Burnus  <burnus@net-b.de>

        PR fortran/57469
        * trans-decl.c (generate_local_decl): Don't warn that
        a dummy is unused, when it is in a namelist.

2013-07-08  Tobias Burnus  <burnus@net-b.de>

        PR fortran/57469
        * gfortran.dg/warn_unused_dummy_argument_4.f90: New.

From-SVN: r200785

gcc/fortran/ChangeLog

+2013-07-08  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/57469
+	* trans-decl.c (generate_local_decl): Don't warn that
+	a dummy is unused, when it is in a namelist.
+
 2013-07-01  Dominique d'Humieres  <dominiq@lps.ens.fr>
 
 	PR fortran/54788
@@ -628,7 +634,7 @@
 
 	* class.c (finalization_scalarizer, finalizer_insert_packed_call,
 	generate_finalization_wrapper): Avoid segfault with absent SIZE=
-	argment to TRANSFER and use correct result kind for SIZE.
+	argument to TRANSFER and use correct result kind for SIZE.
 	* intrinsic.c (gfc_isym_id_by_intmod): Also handle ids of
 	nonmodules.
 	* trans.c (gfc_build_final_call): Handle coarrays.

gcc/fortran/trans-decl.c

@@ -4726,7 +4726,7 @@ generate_local_decl (gfc_symbol * sym)
 	gfc_get_symbol_decl (sym);
 
       /* Warnings for unused dummy arguments.  */
-      else if (sym->attr.dummy)
+      else if (sym->attr.dummy && !sym->attr.in_namelist)
 	{
 	  /* INTENT(out) dummy arguments are likely meant to be set.  */
 	  if (gfc_option.warn_unused_dummy_argument

gcc/testsuite/ChangeLog

+2013-07-08  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/57469
+	* gfortran.dg/warn_unused_dummy_argument_4.f90: New.
+
 2013-07-08  Manfred Schwarb  <manfred99@gmx.ch>
 
 	* gfortran.dg/defined_assignment_7.f90: Fix dg-do.

gcc/testsuite/gfortran.dg/warn_unused_dummy_argument_4.f90

+! { dg-do compile }
+! { dg-options "-Wall" }
+!
+! PR fortran/57469
+!
+! Contributed by Vladimir Fuka
+!
+! Don't warn for unused dummy arguments when they are used in namelists
+!
+   subroutine read_command_line(line,a,b)
+     character(*),intent(in) :: line
+     intent(inout) :: a,b
+     namelist /cmd/ a,b
+
+     read(line,nml = cmd)
+   end