PR c++/25369

	* g++.dg/template/ptrmem16.C: New test.
	PR c++/25369
	* tree.c (really_overloaded_fn): Tweak comment.
	* pt.c (tsubst_call_declarator_parms): Remove.
	(tsubst_copy): Call mark_used on the member referenced by an
	OFFSET_REF.
	* semantics.c (finish_qualified_id_expr): Simplify.
	* decl2.c (mark_used): Accept BASELINKs.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109010 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 15 insertions, 2 deletions

diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index 8c65d946a97..10296a708a1 100644
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -3233,14 +3233,27 @@ check_default_args (tree x)
     }
 }
 
-/* Mark DECL as "used" in the program.  If DECL is a specialization or
-   implicitly declared class member, generate the actual definition.  */
+/* Mark DECL (eithet a _DECL or a BASELINK) as "used" in the program.
+   If DECL is a specialization or implicitly declared class member,
+   generate the actual definition.  */
 
 void
 mark_used (tree decl)
 {
   HOST_WIDE_INT saved_processing_template_decl = 0;
 
+  /* If DECL is a BASELINK for a single function, then treat it just
+     like the DECL for the function.  Otherwise, if the BASELINK is
+     for an overloaded function, we don't know which function was
+     actually used until after overload resolution.  */
+  if (TREE_CODE (decl) == BASELINK)
+    {
+      decl = BASELINK_FUNCTIONS (decl);
+      if (really_overloaded_fn (decl))
+	return;
+      decl = OVL_CURRENT (decl);
+    }
+
   TREE_USED (decl) = 1;
   /* If we don't need a value, then we don't need to synthesize DECL.  */ 
   if (skip_evaluation)