re PR c++/39526 (-Wshadow reports shadowed declarations for parameters of unnamed temp objects)

        PR c++/39526
        * name-lookup.c (pushdecl_maybe_friend): Don't warn about shadowing
        a parm with a parm.

From-SVN: r145012

gcc/cp/ChangeLog

+2009-03-23  Jason Merrill  <jason@redhat.com>
+
+	PR c++/39526
+	* name-lookup.c (pushdecl_maybe_friend): Don't warn about shadowing
+	a parm with a parm.
+
 2009-03-20  Jason Merrill  <jason@redhat.com>
 
 	PR c++/28879

gcc/cp/name-lookup.c

@@ -1031,7 +1031,10 @@ pushdecl_maybe_friend (tree x, bool is_friend)
 		    }
 		}
 
-	      if (warn_shadow && !err)
+	      if (warn_shadow && !err
+		  /* Don't complain about the parms we push and then pop
+		     while tentatively parsing a function declarator.  */
+		  && !(TREE_CODE (x) == PARM_DECL && DECL_CONTEXT (x) == NULL_TREE))
 		{
 		  warning (OPT_Wshadow, "declaration of %q#D shadows a parameter", x);
 		  warning (OPT_Wshadow, "%Jshadowed declaration is here", oldlocal);

gcc/testsuite/ChangeLog

+2009-03-23  Jason Merrill  <jason@redhat.com>
+
+	PR c++/39526
+	* g++.dg/warn/Wshadow-4.C: New test.
+
 2009-03-23  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/39516

gcc/testsuite/g++.dg/warn/Wshadow-4.C

+// PR c++/39526
+// { dg-options "-Wshadow" }
+
+class INetURLObject
+{
+public:
+    INetURLObject(int i);
+    int GetMainURL() const;
+};
+
+int foo(int infoo)		// { dg-warning "shadowed declaration" }
+{
+  int outfoo( INetURLObject( infoo ).GetMainURL()); // { dg-bogus "shadows" }
+  extern void f(int infoo);
+  struct A
+  {
+    void f(int infoo) { }	// { dg-warning "shadows a parameter" }
+  };
+  return outfoo;
+}