c-decl.c (duplicate_decls): If different_binding_level is nonzero...

	* c-decl.c (duplicate_decls): If different_binding_level is nonzero,
	olddecl has argument types and newdecl has none, use the argument
	types from olddecl.

From-SVN: r39254

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 367b933..7cb7002 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+Thu Jan 25 02:01:16 2001  J"orn Rennecke <amylaar@redhat.com>
+
+       * c-decl.c (duplicate_decls): If different_binding_level is nonzero,
+       olddecl has argument types and newdecl has none, use the argument
+       types from olddecl.
+
 2001-01-24  Ulrich Drepper  <drepper@redhat.com>
 
        * dwarf2out.c (prefix_of): New function.  Determine longest common

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index 97ae2ba..06bbbef 100644 (file)
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -1800,11 +1800,17 @@ duplicate_decls (newdecl, olddecl, different_binding_level)
       if (TREE_CODE (newdecl) != FUNCTION_DECL || !DECL_BUILT_IN (olddecl))
        {
          if (different_binding_level)
-           TREE_TYPE (newdecl)
-             = build_type_attribute_variant
-               (newtype,
-                merge_attributes (TYPE_ATTRIBUTES (newtype),
-                                  TYPE_ATTRIBUTES (oldtype)));
+           {
+             if (TYPE_ARG_TYPES (oldtype) != 0
+                 && TYPE_ARG_TYPES (newtype) == 0)
+               TREE_TYPE (newdecl) = common_type (newtype, oldtype);
+             else
+               TREE_TYPE (newdecl)
+                 = build_type_attribute_variant
+                   (newtype,
+                    merge_attributes (TYPE_ATTRIBUTES (newtype),
+                                      TYPE_ATTRIBUTES (oldtype)));
+           }
          else
            TREE_TYPE (newdecl)
              = TREE_TYPE (olddecl)