re PR fortran/39414 (PROCEDURE statement double declaration bug)

2009-04-06  Janus Weil  <janus@gcc.gnu.org>

       PR fortran/39414
       * decl.c (match_procedure_decl): Fix double declaration problems with
       PROCEDURE statements.
       * symbol.c (gfc_add_type): Ditto.


2009-04-06  Janus Weil  <janus@gcc.gnu.org>

       PR fortran/39414
       * gfortran.dg/proc_decl_21.f90: New.

From-SVN: r145583

gcc/fortran/ChangeLog

+2009-04-06  Janus Weil  <janus@gcc.gnu.org>
+
+       PR fortran/39414
+       * decl.c (match_procedure_decl): Fix double declaration problems with
+       PROCEDURE statements.
+       * symbol.c (gfc_add_type): Ditto.
+
 2009-04-06  Paul Thomas  <pault@gcc.gnu.org>
 
         PR fortran/36091

gcc/fortran/decl.c

@@ -4207,12 +4207,20 @@ got_ts:
       /* Set interface.  */
       if (proc_if != NULL)
 	{
+          if (sym->ts.type != BT_UNKNOWN)
+	    {
+	      gfc_error ("Procedure '%s' at %L already has basic type of %s",
+			 sym->name, &gfc_current_locus,
+			 gfc_basic_typename (sym->ts.type));
+	      return MATCH_ERROR;
+	    }
 	  sym->ts.interface = proc_if;
 	  sym->attr.untyped = 1;
 	}
       else if (current_ts.type != BT_UNKNOWN)
 	{
-	  sym->ts = current_ts;
+	  if (gfc_add_type (sym, &current_ts, &gfc_current_locus) == FAILURE)
+	    return MATCH_ERROR;
 	  sym->ts.interface = gfc_new_symbol ("", gfc_current_ns);
 	  sym->ts.interface->ts = current_ts;
 	  sym->ts.interface->attr.function = 1;

gcc/fortran/symbol.c

@@ -1555,8 +1555,7 @@ gfc_add_type (gfc_symbol *sym, gfc_typespec *ts, locus *where)
   if (sym->ts.type != BT_UNKNOWN)
     {
       const char *msg = "Symbol '%s' at %L already has basic type of %s";
-      if (!(sym->ts.type == ts->type
-	    && (sym->attr.flavor == FL_PROCEDURE || sym->attr.result))
+      if (!(sym->ts.type == ts->type && sym->attr.result)
 	  || gfc_notification_std (GFC_STD_GNU) == ERROR
 	  || pedantic)
 	{
@@ -1570,6 +1569,13 @@ gfc_add_type (gfc_symbol *sym, gfc_typespec *ts, locus *where)
 	gfc_warning (msg, sym->name, where, gfc_basic_typename (sym->ts.type));
     }
 
+  if (sym->attr.procedure && sym->ts.interface)
+    {
+      gfc_error ("Procedure '%s' at %L may not have basic type of %s", sym->name, where,
+		 gfc_basic_typename (ts->type));
+      return FAILURE;
+    }
+
   flavor = sym->attr.flavor;
 
   if (flavor == FL_PROGRAM || flavor == FL_BLOCK_DATA || flavor == FL_MODULE

gcc/testsuite/ChangeLog

-2009-04-06  Paul Thomas  <pault@gcc.gnu.org
+2009-04-06  Janus Weil  <janus@gcc.gnu.org>
+
+       PR fortran/39414
+       * gfortran.dg/proc_decl_21.f90: New.
+
+2009-04-06  Paul Thomas  <pault@gcc.gnu.org>
 
         PR fortran/36091
         * gfortran.dg/forall_13.f90: Add -fbounds-check option.

gcc/testsuite/gfortran.dg/proc_decl_21.f90

+! { dg-do compile }
+!
+! PR fortran/39414: PROCEDURE statement double declaration bug
+!
+! Discovered by Paul Thomas <pault@gcc.gnu.org>
+! Modified by Janus Weil <janus@gcc.gnu.org>
+
+
+! forbidden
+
+procedure(integer) :: a
+integer :: a   ! { dg-error "already has basic type of" }
+
+integer :: b
+procedure(integer) :: b	  ! { dg-error "already has basic type of" }
+
+procedure(iabs) :: c
+integer :: c   ! { dg-error "may not have basic type of" }
+
+integer :: d
+procedure(iabs) :: d   ! { dg-error "already has basic type of" }
+
+! allowed
+
+integer :: e
+procedure() :: e
+
+procedure() :: f
+integer :: f
+
+end
+