re PR c++/27423 (ICE on default argument for void parameter)

	PR c++/27423
	* typeck.c (convert_for_initialization): Skip erroneous types.

	* g++.dg/other/void2.C: New test.

From-SVN: r113571

gcc/cp/ChangeLog

 2006-05-06  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/27423
+	* typeck.c (convert_for_initialization): Skip erroneous types.
+
 	PR c++/27422
 	* typeck.c (convert_arguments): Return early on args with
 	invalid types.

gcc/cp/typeck.c

@@ -6219,7 +6219,8 @@ convert_for_initialization (tree exp, tree type, tree rhs, int flags,
       && codel != REFERENCE_TYPE)
     rhs = TREE_OPERAND (rhs, 0);
 
-  if (rhs == error_mark_node
+  if (type == error_mark_node
+      || rhs == error_mark_node
       || (TREE_CODE (rhs) == TREE_LIST && TREE_VALUE (rhs) == error_mark_node))
     return error_mark_node;
 

gcc/testsuite/ChangeLog

 2006-05-06  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/27423
+	* g++.dg/other/void2.C: New test.
+
 	PR c++/27422
 	* g++.dg/conversion/void1.C: New test.
 

gcc/testsuite/g++.dg/other/void2.C

+// PR c++/27423
+// { dg-do compile }
+
+void foo(void = 0);    // { dg-error "incomplete type|invalid use" }
+void bar() { foo(); }