re PR c/25875 (ICE: segmentation fault)

	PR c/25875
	* c-typeck.c (digest_init): Robustify.

	* gcc.dg/init-bad-4.c: New test.

From-SVN: r113153

gcc/ChangeLog

 2006-04-21  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c/25875
+	* c-typeck.c (digest_init): Robustify.
+
 	* c-typeck.c (pop_init_level): Simplify.
 
 2006-04-21  Steve Ellcey  <sje@cup.hp.com>

gcc/c-typeck.c

@@ -4495,6 +4495,7 @@ digest_init (tree type, tree init, bool strict_string, int require_constant)
   tree inside_init = init;
 
   if (type == error_mark_node
+      || !init
       || init == error_mark_node
       || TREE_TYPE (init) == error_mark_node)
     return error_mark_node;

gcc/testsuite/ChangeLog

+2006-04-21  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c/25875
+	* gcc.dg/init-bad-4.c: New test.
+
 2006-04-21  Paul Brook  <paul@codesourcery.com>
 
 	* gcc.dg/arm-vfp1.c: Skip on iWMMXt cpus.

gcc/testsuite/gcc.dg/init-bad-4.c

+/* PR c/25875 */
+/* Origin: Richard Guenther <rguenth@gcc.gnu.org> */
+/* { dg-do compile } */
+
+struct A { } a = (struct A) {{ (X)0 }};  /* { dg-error "no members|extra brace|near|undeclared|constant|compound" } */