re PR c++/14397 (Access check for wrong copy constructor)

cp:
	PR c++/14397
	* call.c (convert_like_real): Build a const qualified temporary,
	when testing ctor access.
testsuite:
	PR c++/14397
	* g++.dg/overload/ref1.C: New.

From-SVN: r79196

gcc/cp/ChangeLog

+2004-03-09  Nathan Sidwell  <nathan@codesourcery.com>
+
+	PR c++/14397
+	* call.c (convert_like_real): Build a const qualified temporary,
+	when testing ctor access.
+
 2004-03-09  Mark Mitchell  <mark@codesourcery.com>
 
 	* call.c (initialize_reference): Fix typo.

gcc/cp/call.c

@@ -4209,9 +4209,10 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
       if (convs->check_copy_constructor_p)
 	/* Generate a temporary copy purely to generate the required
 	   diagnostics.  */
-	build_temp (build_dummy_object (totype), totype, 
-		    LOOKUP_NORMAL|LOOKUP_ONLYCONVERTING,
-		    &diagnostic_fn);
+	build_temp
+	  (build_dummy_object
+	   (build_qualified_type (totype, TYPE_QUAL_CONST)),
+	   totype, LOOKUP_NORMAL|LOOKUP_ONLYCONVERTING, &diagnostic_fn);
 	return expr;
     case ck_ambig:
       /* Call build_user_type_conversion again for the error.  */

gcc/testsuite/ChangeLog

+2004-03-09  Nathan Sidwell  <nathan@codesourcery.com>
+
+	PR c++/14397
+	* g++.dg/overload/ref1.C: New.
+
 2004-03-09  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
 
 	PR c++/14409

gcc/testsuite/g++.dg/overload/ref1.C

+// Copyright (C) 2004 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 5 Mar 2004 <nathan@codesourcery.com>
+
+// Origin: schmid@snake.iap.physik.tu-darmstadt.de
+// Bug 14397: Bogus access error.
+
+struct S { 
+    S (int); 
+    S(S const&); 
+  private: 
+    S(S&); 
+}; 
+ 
+S foo() 
+{ 
+  int result = 0;
+  
+  S s ((0,S (result)));
+  
+  return S (result); 
+}