re PR c++/42655 (! causes the qualified types for rvalue)

	PR c++/42655
	* call.c (convert_like_real): Do full decay_conversion for ck_rvalue.

From-SVN: r155913

gcc/cp/ChangeLog

+2010-01-14  Jason Merrill  <jason@redhat.com>
+
+	PR c++/42655
+	* call.c (convert_like_real): Do full decay_conversion for ck_rvalue.
+
 2010-01-13  Dodji Seketeli  <dodji@redhat.com>
 
 	PR c++/42634

gcc/cp/call.c

@@ -5013,7 +5013,7 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
   switch (convs->kind)
     {
     case ck_rvalue:
-      expr = convert_bitfield_to_declared_type (expr);
+      expr = decay_conversion (expr);
       if (! MAYBE_CLASS_TYPE_P (totype))
 	return expr;
       /* Else fall through.  */

gcc/testsuite/ChangeLog

+2010-01-14  Jason Merrill  <jason@redhat.com>
+
+	PR c++/42655
+	* g++.dg/overload/rvalue1.C: New.
+
 2010-01-14  Martin Jambor  <mjambor@suse.cz>
 
 	PR tree-optimization/42706

gcc/testsuite/g++.dg/overload/rvalue1.C

+// PR c++/42655
+
+void unused(const bool &) { }
+
+int main() {
+  volatile bool x = false;
+  unused(!!x); // type of "!x" is bool
+  unused(!x); // type of "!x" is bool
+}
+