re PR fortran/43592 (Unexpected INTERFACE statement in INTERFACE block at (1))

2010-05-03  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/43592
	* fortran/parse.c (parse_interface): Do not dereference a NULL pointer.

2010-05-03  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/43592
	* gfortran.dg/unexpected_interface.f90: New test.

From-SVN: r158998

gcc/fortran/ChangeLog

+2010-05-03  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/43592
+	* fortran/parse.c (parse_interface): Do not dereference a NULL pointer.
+
 2010-05-02  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/18918

gcc/fortran/parse.c

@@ -2264,9 +2264,9 @@ loop:
     {
       if (current_state == COMP_NONE)
 	{
-	  if (new_state == COMP_FUNCTION)
+	  if (new_state == COMP_FUNCTION && sym)
 	    gfc_add_function (&sym->attr, sym->name, NULL);
-	  else if (new_state == COMP_SUBROUTINE)
+	  else if (new_state == COMP_SUBROUTINE && sym)
 	    gfc_add_subroutine (&sym->attr, sym->name, NULL);
 
 	  current_state = new_state;

gcc/testsuite/ChangeLog

+2010-05-03  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/43592
+	* gfortran.dg/unexpected_interface.f90: New test.
+
 2010-05-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* ada/acats/run_acats (which): New function.

gcc/testsuite/gfortran.dg/unexpected_interface.f90

+! { dg-do compile }
+! PR fortran/43592
+! Original code submitted by Joost VandeVondele
+! Dejagnu-ification by Steven G. Kargl
+! 
+ interface assignment (=)
+  interface pseudo_scalar  ! { dg-error "Unexpected INTERFACE statement" }
+  pure function double_tensor2odd (x, t2) result (xt2)
+! { dg-error "Unexpected end of file" "" { target "*-*-*" } 0 }