re PR c++/28111 (ICE with invalid friend in template class)

	PR c++/28111
	* pt.c (determine_specialization): Check for invalid decls.

	* g++.dg/template/friend43.C: New test.

From-SVN: r114887

gcc/cp/ChangeLog

 2006-06-22  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/28111
+	* pt.c (determine_specialization): Check for invalid decls.
+
 	PR c++/28110
 	* pt.c (unify) <case TEMPLATE_PARM_INDEX>: Check for invalid
 	parameters.

gcc/cp/pt.c

@@ -1354,7 +1354,7 @@ determine_specialization (tree template_id,
 
   *targs_out = NULL_TREE;
 
-  if (template_id == error_mark_node)
+  if (template_id == error_mark_node || decl == error_mark_node)
     return error_mark_node;
 
   fns = TREE_OPERAND (template_id, 0);

gcc/testsuite/ChangeLog

 2006-06-22  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/28111
+	* g++.dg/template/friend43.C: New test.
+
 	PR c++/28110
 	* g++.dg/template/crash53.C: New test.
 

gcc/testsuite/g++.dg/template/friend43.C

+// PR c++/28111
+// { dg-do compile }
+
+template<typename> void foo();
+
+template<typename T> struct A
+{
+  friend void foo<>(typename T::X);  // { dg-error "not a class" }
+};
+
+A<int> a;