re PR c++/39786 (Qualified name lookup through different numbers of using directives)

	PR c++/39786
	* g++.dg/lookup/using22.C: New.

From-SVN: r153865

gcc/testsuite/ChangeLog

 2009-11-03  Jason Merrill  <jason@redhat.com>
 
+	PR c++/39786
+	* g++.dg/lookup/using22.C: New.
+
 	PR c++/41876
 	* g++.dg/parse/eh-decl.C: New.
 

gcc/testsuite/g++.dg/lookup/using22.C

+// PR c++/39786
+
+namespace A {
+    char (*f(char *p))[13] { return 0; }
+}
+
+namespace B {
+    namespace C {
+        char (*f(int p))[42] { return 0; }
+    }
+    using namespace C;
+}
+
+using namespace B;
+using namespace A;
+
+char x[sizeof *::f(0) == 42 ? 1 : -1];