re PR c++/11409 (using declarations and fabs built-in)

	PR c++/11409
	* class.c (resolve_address_of_overloaded_function): When building
	list of matching non-template function decls, ignore anticipated
	declarations of undeclared or shadowed GCC builtins.

	* g++.dg/overload/builtin3.C: New test case.

From-SVN: r71139

gcc/cp/ChangeLog

+2003-09-06  Roger Sayle  <roger@eyesopen.com>
+
+	PR c++/11409
+	* class.c (resolve_address_of_overloaded_function): When building
+	list of matching non-template function decls, ignore anticipated
+	declarations of undeclared or shadowed GCC builtins.
+
 2003-09-06  Steven Bosscher  <steven@gcc.gnu.org>
 
 	PR c++/11595

gcc/cp/class.c

@@ -5777,7 +5777,11 @@ cannot resolve overloaded function `%D' based on conversion to type `%T'",
 	    /* We're looking for a non-static member, and this isn't
 	       one, or vice versa.  */
 	    continue;
-	
+
+	  /* Ignore anticipated decls of undeclared builtins.  */
+	  if (DECL_ANTICIPATED (fn))
+	    continue;
+
 	  /* See if there's a match.  */
 	  fntype = TREE_TYPE (fn);
 	  if (is_ptrmem)

gcc/testsuite/ChangeLog

+2003-09-06  Roger Sayle  <roger@eyesopen.com>
+
+	PR c++/11409
+	* g++.dg/overload/builtin3.C: New test case.
+
 2003-09-06  Steven Bosscher  <steven@gcc.gnu.org>
 
 	PR c/9862

gcc/testsuite/g++.dg/overload/builtin3.C

+// PR c++/11409
+// { dg-do compile }
+
+namespace std {
+  double fabs (double);
+}
+using std::fabs;
+
+double (*p) (double) = &fabs;  // { dg-bogus "is ambiguous" "" }
+