re PR c++/43886 ([C++0x] name lookup failure on un-used local variable in lambda…

re PR c++/43886 ([C++0x] name lookup failure on un-used local variable in lambda compound-statement)

	PR c++/43886
	* parser.c (cp_parser_lambda_body): Clear local_variables_forbidden_p.

From-SVN: r177216

gcc/cp/ChangeLog

 2011-08-02  Jason Merrill  <jason@redhat.com>
 
+	PR c++/43886
+	* parser.c (cp_parser_lambda_body): Clear local_variables_forbidden_p.
+
 	PR c++/49577
 	* typeck2.c (check_narrowing): Check unsigned mismatch.
 	* semantics.c (finish_compound_literal): check_narrowing.

gcc/cp/parser.c

@@ -7801,12 +7801,15 @@ static void
 cp_parser_lambda_body (cp_parser* parser, tree lambda_expr)
 {
   bool nested = (current_function_decl != NULL_TREE);
+  bool local_variables_forbidden_p = parser->local_variables_forbidden_p;
   if (nested)
     push_function_context ();
   else
     /* Still increment function_depth so that we don't GC in the
        middle of an expression.  */
     ++function_depth;
+  /* Clear this in case we're in the middle of a default argument.  */
+  parser->local_variables_forbidden_p = false;
 
   /* Finish the function call operator
      - class_specifier
@@ -7904,6 +7907,7 @@ cp_parser_lambda_body (cp_parser* parser, tree lambda_expr)
     expand_or_defer_fn (finish_function (/*inline*/2));
   }
 
+  parser->local_variables_forbidden_p = local_variables_forbidden_p;
   if (nested)
     pop_function_context();
   else

gcc/testsuite/ChangeLog

 2011-08-02  Jason Merrill  <jason@redhat.com>
 
+	PR c++/43886
+	* g++.dg/cpp0x/lambda/lambda-defarg2.C: New.
+
 	PR c++/49577
 	* g++.dg/cpp0x/initlist5.C: Add additional cases.
 

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-defarg2.C

+// PR c++/43886
+// { dg-options -std=c++0x }
+
+void f2() {
+  int i = 1;
+  void g5(int = ([]{ return sizeof i; })());
+}