re PR c++/28711 (ICE on invalid initializer for multidimensional array)

	PR c++/28711
	* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Robustify.

	* g++.dg/template/ctor8.C: New test.

From-SVN: r116210

gcc/cp/ChangeLog

+2006-08-17  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/28711
+	* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Robustify.
+
 2006-08-17  Paolo Bonzini  <bonzini@gnu.org>
 
 	PR c++/28573

gcc/cp/pt.c

@@ -9201,6 +9201,9 @@ tsubst_copy_and_build (tree t,
 	tree type = tsubst (TREE_TYPE (t), args, complain, in_decl);
 	bool process_index_p;
 
+	if (type == error_mark_node)
+	  return error_mark_node;
+
 	/* digest_init will do the wrong thing if we let it.  */
 	if (type && TYPE_PTRMEMFUNC_P (type))
 	  return t;

gcc/testsuite/ChangeLog

+2006-08-17  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
+	PR c++/28711
+	* g++.dg/template/ctor8.C: New test.
+
 2006-08-17  Paolo Bonzini  <bonzini@gnu.org>
 
 	* PR c++/28573

gcc/testsuite/g++.dg/template/ctor8.C

+// PR c++/28711
+// { dg-do compile }
+// { dg-options "" }
+
+template<int> struct A
+{
+  int x[1][1];
+  A() : x((int[1][]){{0}}) {}  // { dg-error "except the first" }
+};
+
+A<0> a;