re PR target/27421 (ICE with invalid array in struct)

	PR target/27421
	* config/i386/i386.c (classify_argument): Skip fields with invalid
	types in unions.

	* gcc.dg/union-3.c: New test.

From-SVN: r114494

gcc/ChangeLog

+2006-06-08  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR target/27421
+	* config/i386/i386.c (classify_argument): Skip fields with invalid
+	types in unions.
+
 2006-06-08  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* cse.c (flush_hash_table): Use VOIDmode to invalidate a REG.

gcc/config/i386/i386.c

@@ -3045,6 +3045,10 @@ classify_argument (enum machine_mode mode, tree type,
 	      if (TREE_CODE (field) == FIELD_DECL)
 		{
 		  int num;
+
+		  if (TREE_TYPE (field) == error_mark_node)
+		    continue;
+
 		  num = classify_argument (TYPE_MODE (TREE_TYPE (field)),
 					   TREE_TYPE (field), subclasses,
 					   bit_offset);

gcc/testsuite/ChangeLog

+2006-06-08  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR target/27421
+	* gcc.dg/union-3.c: New test.
+
 2006-06-08  Richard Guenther  <rguenther@suse.de>
 	PR middle-end/27116

gcc/testsuite/gcc.dg/union-3.c

+/* PR target/27421 */
+/* { dg-do compile } */
+
+union A
+{
+  int i;
+  void x[1];  /* { dg-error "array of voids" } */
+};
+
+void foo(union A a) {}