re PR fortran/40176 (Fortran 2003: Procedure pointers with array return value)

2009-06-12  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40176
	* resolve.c (resolve_symbol): Additional error check, preventing an
	infinite loop.


2009-06-12  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40176
	* gfortran.dg/proc_decl_1.f90: Extended.

From-SVN: r148440

gcc/fortran/ChangeLog

+2009-06-12  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/40176
+	* resolve.c (resolve_symbol): Additional error check, preventing an
+	infinite loop.
+
 2009-06-11  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/40402

gcc/fortran/resolve.c

@@ -9406,10 +9406,19 @@ resolve_symbol (gfc_symbol *sym)
   if (sym->attr.procedure && sym->ts.interface
       && sym->attr.if_source != IFSRC_DECL)
     {
+      if (sym->ts.interface == sym)
+	{
+	  gfc_error ("PROCEDURE '%s' at %L may not be used as its own "
+		     "interface", sym->name, &sym->declared_at);
+	  return;
+	}
       if (sym->ts.interface->attr.procedure)
-	gfc_error ("Interface '%s', used by procedure '%s' at %L, is declared "
-		   "in a later PROCEDURE statement", sym->ts.interface->name,
-		   sym->name,&sym->declared_at);
+	{
+	  gfc_error ("Interface '%s', used by procedure '%s' at %L, is declared"
+		     " in a later PROCEDURE statement", sym->ts.interface->name,
+		     sym->name,&sym->declared_at);
+	  return;
+	}
 
       /* Get the attributes from the interface (now resolved).  */
       if (sym->ts.interface->attr.if_source

gcc/testsuite/ChangeLog

+2009-06-12  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/40176
+	* gfortran.dg/proc_decl_1.f90: Extended.
+
 2009-06-12  Ian Lance Taylor  <iant@google.com>
 
 	* gcc.dg/Wcxx-compat-13.c: New testcase.

gcc/testsuite/gfortran.dg/proc_decl_1.f90

@@ -57,6 +57,8 @@ program prog
   procedure ( ) :: r 
   procedure ( up ) :: s  ! { dg-error "must be explicit" }
 
+  procedure(t) :: t  ! { dg-error "may not be used as its own interface" }
+
   call s
 
 contains