pt.c (tsubst_friend_function): Improve comment.

	* pt.c (tsubst_friend_function): Improve comment.
	(instantiate_decl): Avoid crashing when a "nested" function is
	instantiated from the top level.

From-SVN: r31403

gcc/cp/ChangeLog

+2000-01-13  Mark Mitchell  <mark@codesourcery.com>
+
+	* pt.c (tsubst_friend_function): Improve comment.
+	(instantiate_decl): Avoid crashing when a "nested" function is
+	instantiated from the top level.
+	
+	* dump.c (dqeueue_and_dump): Dump
+	DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION.
+
 2000-01-13  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* call.c: If GATHER_STATISTICS, declare `n_build_method_call'.

gcc/cp/dump.c

 /* Tree-dumping functionality for intermediate representation.
-   Copyright (C) 1999 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
    Written by Mark Mitchell <mark@codesourcery.com>
 
 This file is part of GNU CC.
@@ -585,6 +585,8 @@ dequeue_and_dump (di)
 		dump_string (di, "global fini");
 	      dump_int (di, "prio", GLOBAL_INIT_PRIORITY (t));
 	    }
+	  if (DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (t))
+	    dump_string (di, "pseudo tmpl");
 
 	  dump_child ("body", DECL_SAVED_TREE (t));
 	}

gcc/cp/pt.c

@@ -4465,9 +4465,9 @@ tsubst_friend_function (decl, args)
 	  new_friend_result_template_info = NULL_TREE;
 	}
 
-      /* Inside pushdecl_namespace_level, we will push into the 
-	 current namespace. However, the friend function should 
-	 tyically go into the namespace of the template. */
+      /* Inside pushdecl_namespace_level, we will push into the
+	 current namespace. However, the friend function should go
+	 into the namespace of the template. */
       ns = decl_namespace_context (new_friend);
       push_nested_namespace (ns);
       old_decl = pushdecl_namespace_level (new_friend);
@@ -9559,7 +9559,7 @@ instantiate_decl (d)
       && ! DECL_NEEDED_P (d)
       /* If the function that caused us to be instantiated is needed, we
 	 will be needed, too.  */
-      && (! nested || ! DECL_NEEDED_P (old_fn)))
+      && (! nested || (old_fn && ! DECL_NEEDED_P (old_fn))))
     DECL_DEFER_OUTPUT (d) = 1;
 
   /* We're now committed to instantiating this template.  Mark it as

gcc/testsuite/g++.old-deja/g++.pt/crash54.C

+// Build don't link:
+// Origin: Mark Mitchell <mark@codesourcery.com>
+
+template <class T>
+int g (T);
+
+int j = g (3);
+
+template <class T>
+inline T f (T)
+{
+  return 2;
+}
+
+template <class T>
+struct S
+{
+  static const int i;
+};
+
+template <class T>
+const int S<T>::i = f (3);
+
+template <class T>
+int g (T)
+{
+  return S<double>::i;
+}
+