tree.c (build_common_tree_nodes_2): Don't copy va_list_type_node if it's a record type.

* tree.c (build_common_tree_nodes_2): Don't copy va_list_type_node
if it's a record type.

From-SVN: r40376

gcc/ChangeLog

+Sat Mar 10 22:42:05 2001  Alexandre Oliva  <aoliva@redhat.com>
+
+	* tree.c (build_common_tree_nodes_2): Don't copy va_list_type_node
+	if it's a record type.
+
 Sat Mar 10 17:52:54 2001  Christopher Faylor <cgf@cygnus.com>
 
 	* config/i386/cygwin.h: Make ../w32api a system directory.  Reorganize

gcc/tree.c

@@ -4828,7 +4828,16 @@ build_common_tree_nodes_2 (short_double)
   {
     tree t;
     BUILD_VA_LIST_TYPE (t);
-    va_list_type_node = build_type_copy (t);
+
+    /* Many back-ends define record types without seting TYPE_NAME.
+       If we copied the record type here, we'd keep the original
+       record type without a name.  This breaks name mangling.  So,
+       don't copy record types and let c_common_nodes_and_builtins()
+       declare the type to be __builtin_va_list.  */
+    if (TREE_CODE (t) != RECORD_TYPE)
+      t = build_type_copy (t);
+
+    va_list_type_node = t;
   }
 
   V4SF_type_node = make_node (VECTOR_TYPE);