re PR c++/10915 (a not-useful non-avoidable warning: conversion to a reference…

re PR c++/10915 (a not-useful non-avoidable warning:  conversion to a reference to the same type will never use a type conversion operator)

testsuite/
        * g++.old-deja/g++.jason/conversion5.C: Adjust option.
        * g++.old-deja/g++.bugs/900215_01.C: Likewise.

cp/
        PR c++/10915
        * decl.c (grok_op_properties): Warn possible confusing conversion
        only if -Wconversion.

From-SVN: r68303

gcc/cp/ChangeLog

+2003-06-21  Gabriel Dos Reis <gdr@integrable-solutions.net>
+
+	PR c++/10915
+	* decl.c (grok_op_properties): Warn possible confusing conversion
+	only if -Wconversion.
+
 2003-06-20  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/10749

gcc/cp/decl.c

@@ -12371,7 +12371,7 @@ grok_op_properties (tree decl, int friendp)
 		       && DERIVED_FROM_P (t, current_class_type))
 		what = "a base class";
 
-	      if (what)
+	      if (what && warn_conversion)
 		warning ("conversion to %s%s will never use a type conversion operator",
 			 ref ? "a reference to " : "", what);
 	    }

gcc/testsuite/ChangeLog

+2003-06-21  Gabriel Dos Reis <gdr@integrable-solutions.net>
+
+	* g++.old-deja/g++.jason/conversion5.C: Adjust option.
+	* g++.old-deja/g++.bugs/900215_01.C: Likewise.
+
 2003-06-20  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/10888

gcc/testsuite/g++.dg/warn/conversion-function-1.C

+// Copyright (C) 2003 Free Software Foundation
+// Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
+// { dg-options "-Wno-conversion" }
+
+struct A {
+   operator A&();
+};
+

gcc/testsuite/g++.old-deja/g++.bugs/900215_01.C

@@ -20,6 +20,8 @@
 // 8/3/2000 (nathan): The std allows you to define such an op, but
 // it will never be called. [class.conv.fct]. Make it an unconditional warning.
 
+// { dg-options "-Wconversion" }
+
 struct struct0 {
 
   operator void ();		// { dg-warning "" } operator void

gcc/testsuite/g++.old-deja/g++.jason/conversion5.C

 // { dg-do assemble  }
+// { dg-options "-Wconversion" }
 struct A { };
 struct B: public A {
   A a;