pt.c (tsubst_decl, [...]): Clear DECL_SAVED_TREE.

        * pt.c (tsubst_decl, case FUNCTION_DECL): Clear DECL_SAVED_TREE.
        (tsubst_friend_function): Copy it here.

        * decl.c (grok_op_properties): Fix typo.

        * decl2.c (delete_sanity): Clarify warning, avoid failure on
        deleting void*.

        * pt.c (check_explicit_specialization): Clarify error.

        * decl.c (pushdecl): Also pull out one of the FUNCTION_DECLs from
        an old OVERLOAD when we're declaring a non-function.
        (pushdecl, destroy_local_var): Check for error_mark_node.
        (warn_extern_redeclared_static): Also bail early if
        we're a CONST_DECL.
        (push_overloaded_decl): Ignore an old error_mark_node.

From-SVN: r34652

gcc/cp/ChangeLog

+2000-06-22  Jason Merrill  <jason@redhat.com>
+
+	* pt.c (tsubst_decl, case FUNCTION_DECL): Clear DECL_SAVED_TREE.
+	(tsubst_friend_function): Copy it here.
+
+	* decl.c (grok_op_properties): Fix typo.
+
+	* decl2.c (delete_sanity): Clarify warning, avoid failure on
+	deleting void*.
+
+	* pt.c (check_explicit_specialization): Clarify error.
+
+	* decl.c (pushdecl): Also pull out one of the FUNCTION_DECLs from
+	an old OVERLOAD when we're declaring a non-function.
+	(pushdecl, destroy_local_var): Check for error_mark_node.
+	(warn_extern_redeclared_static): Also bail early if 
+	we're a CONST_DECL.
+	(push_overloaded_decl): Ignore an old error_mark_node.
+
 2000-06-22  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* call.c (build_x_va_arg): Check if in a template decl.

gcc/cp/decl.c

@@ -3092,7 +3092,8 @@ warn_extern_redeclared_static (newdecl, olddecl)
   tree name;
 
   if (TREE_CODE (newdecl) == TYPE_DECL
-      || TREE_CODE (newdecl) == TEMPLATE_DECL)
+      || TREE_CODE (newdecl) == TEMPLATE_DECL
+      || TREE_CODE (newdecl) == CONST_DECL)
     return;
 
   /* Don't get confused by static member functions; that's a different
@@ -3863,14 +3864,20 @@ pushdecl (x)
 	 actually the same as the function we are declaring.  (If
 	 there is one, we have to merge our declaration with the
 	 previous declaration.)  */
-      if (t && TREE_CODE (t) == OVERLOAD && TREE_CODE (x) == FUNCTION_DECL)
+      if (t && TREE_CODE (t) == OVERLOAD)
 	{
 	  tree match;
 
-	  for (match = t; match; match = OVL_NEXT (match))
-	    if (DECL_ASSEMBLER_NAME (OVL_CURRENT (t))
-		== DECL_ASSEMBLER_NAME (x))
-	      break;
+	  if (TREE_CODE (x) == FUNCTION_DECL)
+	    for (match = t; match; match = OVL_NEXT (match))
+	      {
+		if (DECL_ASSEMBLER_NAME (OVL_CURRENT (t))
+		    == DECL_ASSEMBLER_NAME (x))
+		  break;
+	      }
+	  else
+	    /* Just choose one.  */
+	    match = t;
 
 	  if (match)
 	    t = OVL_CURRENT (match);
@@ -3972,7 +3979,7 @@ pushdecl (x)
       if (TREE_CODE (x) == TYPE_DECL)
 	{
 	  tree type = TREE_TYPE (x);
-          if (DECL_SOURCE_LINE (x) == 0)
+	  if (DECL_SOURCE_LINE (x) == 0)
             {
 	      if (TYPE_NAME (type) == 0)
 	        TYPE_NAME (type) = x;
@@ -4010,6 +4017,7 @@ pushdecl (x)
 	  tree decl;
 
 	  if (IDENTIFIER_NAMESPACE_VALUE (name) != NULL_TREE
+	      && IDENTIFIER_NAMESPACE_VALUE (name) != error_mark_node
 	      && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name))
 		  || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name))))
 	    decl = IDENTIFIER_NAMESPACE_VALUE (name);
@@ -4577,6 +4585,9 @@ push_overloaded_decl (decl, flags)
 		return fn;
 	    }
 	}
+      else if (old == error_mark_node)
+	/* Ignore the undefined symbol marker.  */
+	old = NULL_TREE;
       else
 	{
 	  cp_error_at ("previous non-function declaration `%#D'", old);
@@ -8022,7 +8033,8 @@ destroy_local_var (decl)
     return;
 
   /* And only things with destructors need cleaning up.  */
-  if (TYPE_HAS_TRIVIAL_DESTRUCTOR (type))
+  if (type == error_mark_node
+      || TYPE_HAS_TRIVIAL_DESTRUCTOR (type))
     return;
 
   if (TREE_CODE (decl) == VAR_DECL &&
@@ -12583,7 +12595,7 @@ grok_op_properties (decl, virtualp, friendp)
 		  break;
 
 		case PREDECREMENT_EXPR:
-		  operator_code = PREDECREMENT_EXPR;
+		  operator_code = POSTDECREMENT_EXPR;
 		  break;
 
 		default:

gcc/cp/decl2.c

@@ -1283,8 +1283,11 @@ delete_sanity (exp, size, doing_vec, use_global_delete)
 
   /* Deleting ptr to void is undefined behaviour [expr.delete/3].  */
   if (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE)
-    cp_warning ("`%T' is not a pointer-to-object type", type);
-  
+    {
+      cp_warning ("deleting `%T' is undefined", type);
+      doing_vec = 0;
+    }
+
   /* An array can't have been allocated by new, so complain.  */
   if (TREE_CODE (t) == ADDR_EXPR
       && TREE_CODE (TREE_OPERAND (t, 0)) == VAR_DECL

gcc/cp/pt.c

@@ -1300,8 +1300,12 @@ check_explicit_specialization (declarator, decl, template_count, flags)
 	  /* This case handles bogus declarations like template <>
 	     template <class T> void f<int>(); */
 
-	  cp_error ("template-id `%D' in declaration of primary template",
-		    declarator);
+	  if (uses_template_parms (declarator))
+	    cp_error ("partial specialization `%D' of function template",
+		      declarator);
+	  else
+	    cp_error ("template-id `%D' in declaration of primary template",
+		      declarator);
 	  return decl;
 	}
 
@@ -4507,7 +4511,11 @@ tsubst_friend_function (decl, args)
      instantiation of anything.  */
   DECL_USE_TEMPLATE (new_friend) = 0;
   if (TREE_CODE (decl) == TEMPLATE_DECL)
-    DECL_USE_TEMPLATE (DECL_TEMPLATE_RESULT (new_friend)) = 0;
+    {
+      DECL_USE_TEMPLATE (DECL_TEMPLATE_RESULT (new_friend)) = 0;
+      DECL_SAVED_TREE (DECL_TEMPLATE_RESULT (new_friend))
+	= DECL_SAVED_TREE (DECL_TEMPLATE_RESULT (decl));
+    }
 
   /* The mangled name for the NEW_FRIEND is incorrect.  The call to
      tsubst will have resulted in a call to
@@ -5727,6 +5735,7 @@ tsubst_decl (t, args, type, in_decl)
 	TREE_CHAIN (r) = NULL_TREE;
 	DECL_PENDING_INLINE_INFO (r) = 0;
 	DECL_PENDING_INLINE_P (r) = 0;
+	DECL_SAVED_TREE (r) = NULL_TREE;
 	TREE_USED (r) = 0;
 	if (DECL_CLONED_FUNCTION (r))
 	  {