re PR fortran/39893 ([4.4] gfortran ICE on invalid program)

2009-04-26  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/39893
	* gfortran.dg/assumed_charlen_dummy.f90: New Test.


2009-04-26  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/39893
	fortran/data.c (gfc_assign_data_value): If the lvalue is an 
	assumed character length entity in a data statement, then 
	return FAILURE to prevent segmentation fault.

From-SVN: r146816

gcc/fortran/ChangeLog

+2009-04-26  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/39893
+	fortran/data.c (gfc_assign_data_value): If the lvalue is an 
+	assumed character length entity in a data statement, then 
+	return FAILURE to prevent segmentation fault.
+
 2009-04-26  Jakub Jelinek  <jakub@redhat.com>
 
 	* trans-decl.c: Include pointer-set.h.

gcc/fortran/data.c

@@ -416,7 +416,11 @@ gfc_assign_data_value (gfc_expr *lvalue, gfc_expr *rvalue, mpz_t index)
     }
 
   if (ref || last_ts->type == BT_CHARACTER)
-    expr = create_character_intializer (init, last_ts, ref, rvalue);
+    {
+      if (lvalue->ts.cl->length == NULL && !(ref && ref->u.ss.length != NULL))
+	return FAILURE;
+      expr = create_character_intializer (init, last_ts, ref, rvalue);
+    }
   else
     {
       /* Overwriting an existing initializer is non-standard but usually only

gcc/testsuite/ChangeLog

+2009-04-26  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/39893
+	* gfortran.dg/assumed_charlen_dummy.f90: New Test.
+
 2009-04-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR inline-asm/39543

gcc/testsuite/gfortran.dg/assumed_charlen_dummy.f90

+! { dg-do compile }
+! Test the fix for PR fortran/39893.
+! Original testcase provided by Deji Akingunola.
+! Reduced testcase provided by Dominique d'Humieres.
+!
+      SUBROUTINE XAUTOGET()
+      CHARACTER*(*) DICBA    ! { dg-error "Entity with assumed character" }
+      DATA DICBA /"CLIP" /
+      RETURN
+      END