semantics.c (begin_class_definition): Check we're not inside a template parm list.

cp:
	* semantics.c (begin_class_definition): Check we're not inside a
	template parm list.
testsuite:
	* g++.old-deja/g++.pt/crash65.C: New test.

From-SVN: r39113

gcc/cp/ChangeLog

 2001-01-18  Nathan Sidwell  <nathan@codesourcery.com>
 
+	* semantics.c (begin_class_definition): Check we're not inside a
+	template parm list.
+
+2001-01-18  Nathan Sidwell  <nathan@codesourcery.com>
+
 	* tree.c (walk_tree, TREE_LIST): Don't walk the TREE_PURPOSE of
 	BASELINK_P.
 

gcc/cp/semantics.c

@@ -1720,6 +1720,11 @@ tree
 begin_class_definition (t)
      tree t;
 {
+  if (processing_template_parmlist)
+    {
+      cp_error ("definition of `%#T' inside template parameter list", t);
+      return error_mark_node;
+    }
   if (t == error_mark_node
       || ! IS_AGGR_TYPE (t))
     {

gcc/testsuite/ChangeLog

+2001-01-18  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.old-deja/g++.pt/crash65.C: New test.
+
 2001-01-18  Neil Booth  <neil@daikokuya.demon.co.uk>
 
         * gcc.dg/cpp/assembl2.S: New test case.

gcc/testsuite/g++.old-deja/g++.pt/crash65.C

+// Build don't link:
+
+// Copyright (C) 2000 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 11 Jan 2001 <nathan@codesourcery.com>
+
+// Bug 1506. We ICE'd on a struct definition inside a template parms.
+// This is still not completely fixed, but now issues a diagnostic
+
+// crash test - XFAIL *-*-*
+
+template<class T =
+struct W {};    // ERROR - inside template parms