re PR fortran/35152 (Implicit procedure with keyword=argument is accepted)

gcc/fortran:
2008-03-19  Daniel Franke  <franke.daniel@gmail.com>

        PR fortran/35152
        * interface.c (gfc_procedure_use): Check for keyworded arguments in
        procedures without explicit interfaces.

gcc/testsuite:
2008-03-19  Daniel Franke  <franke.daniel@gmail.com>

        PR fortran/35152
        * gfortran.dg/argument_checking_16.f90: New test.

From-SVN: r133347

gcc/fortran/ChangeLog

+2008-03-19  Daniel Franke  <franke.daniel@gmail.com>
+
+	PR fortran/35152
+	* interface.c (gfc_procedure_use): Check for keyworded arguments in
+	procedures without explicit interfaces.
+
 2008-03-16  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/35470

gcc/fortran/interface.c

@@ -2419,9 +2419,26 @@ gfc_procedure_use (gfc_symbol *sym, gfc_actual_arglist **ap, locus *where)
 	}
     }
 
-  if (sym->attr.if_source == IFSRC_UNKNOWN
-      || !compare_actual_formal (ap, sym->formal, 0,
-				 sym->attr.elemental, where))
+  if (sym->attr.external
+      || sym->attr.if_source == IFSRC_UNKNOWN)
+    {
+      gfc_actual_arglist *a;
+      for (a = *ap; a; a = a->next)
+	{
+	  /* Skip g77 keyword extensions like %VAL, %REF, %LOC.  */
+	  if (a->name != NULL && a->name[0] != '%')
+	    {
+	      gfc_error("Keyword argument requires explicit interface "
+			"for procedure '%s' at %L", sym->name, &a->expr->where);
+	      break;
+	    }
+	}
+
+      return;
+    }
+
+  if (!compare_actual_formal (ap, sym->formal, 0,
+			      sym->attr.elemental, where))
     return;
 
   check_intents (sym->formal, *ap);

gcc/testsuite/ChangeLog

+2008-03-19  Daniel Franke  <franke.daniel@gmail.com>
+
+	PR fortran/35152
+	* gfortran.dg/argument_checking_16.f90: New test.
+
 2008-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR libfortran/32972

gcc/testsuite/gfortran.dg/argument_checking_16.f90

+! { dg-do compile }
+! PR fortran/35152 - implicit procedure with keyword=argument
+
+external bar
+
+call bar(a=5)       ! { dg-error "requires explicit interface" }
+call foo(a=5)       ! { dg-error "requires explicit interface" }
+end
+