re PR c++/33208 (Broken diagnostic: 'component_ref' not supported by dump_decl)

/cp
2007-09-02  Paolo Carlini  <pcarlini@suse.de>

	PR c++/33208
	* typeck.c (build_unary_op): Fix error message for
	Boolean expression as operand to operator--.

/testsuite
2007-09-02  Paolo Carlini  <pcarlini@suse.de>

	PR c++/33208
	* g++.dg/other/error18.C: New.
	* g++.dg/expr/bitfield3.C: Adjust.

From-SVN: r128025

gcc/cp/ChangeLog

+2007-09-02  Paolo Carlini  <pcarlini@suse.de>
+
+	PR c++/33208
+	* typeck.c (build_unary_op): Fix error message for
+	Boolean expression as operand to operator--.
+
 2007-09-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* tree.c (pod_type_p, zero_init_p): Use strip_array_types.

gcc/cp/typeck.c

@@ -4323,7 +4323,8 @@ build_unary_op (enum tree_code code, tree xarg, int noconvert)
 	  {
 	    if (code == POSTDECREMENT_EXPR || code == PREDECREMENT_EXPR)
 	      {
-		error ("invalid use of %<--%> on bool variable %qD", arg);
+		error ("invalid use of Boolean expression as operand "
+		       "to %<operator--%>");
 		return error_mark_node;
 	      }
 	    val = boolean_increment (code, arg);

gcc/testsuite/ChangeLog

+2007-09-02  Paolo Carlini  <pcarlini@suse.de>
+
+	PR c++/33208
+	* g++.dg/other/error18.C: New.
+	* g++.dg/expr/bitfield3.C: Adjust.
+
 2007-09-02  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR fortran/33276

gcc/testsuite/g++.dg/expr/bitfield3.C

@@ -7,6 +7,6 @@ struct S {
 S s;
 
 void f() {
-  s.x--; // { dg-error "bool" }
-  --s.x; // { dg-error "bool" }
+  s.x--; // { dg-error "Boolean expression" }
+  --s.x; // { dg-error "Boolean expression" }
 }

gcc/testsuite/g++.dg/other/error18.C

+// PR c++/33208
+
+struct A
+{
+  bool b;
+};
+
+void f(A a)
+{
+  a.b--; // { dg-error "Boolean expression" }
+}