re PR c++/60252 ([c++11] ICE with invalid variable-length array in lambda parameter)

	PR c++/60252
	* lambda.c (maybe_resolve_dummy): Don't try to capture this
	in declaration context.

From-SVN: r207999

gcc/cp/ChangeLog

 2014-02-21  Jason Merrill  <jason@redhat.com>
 
+	PR c++/60252
+	* lambda.c (maybe_resolve_dummy): Don't try to capture this
+	in declaration context.
+
 	DR 1591
 	PR c++/60051
 	* pt.c (unify): Only unify if deducible.  Handle 0-length list.

gcc/cp/lambda.c

@@ -749,7 +749,10 @@ maybe_resolve_dummy (tree object)
   if (type != current_class_type
       && current_class_type
       && LAMBDA_TYPE_P (current_class_type)
-      && DERIVED_FROM_P (type, current_nonlambda_class_type ()))
+      && DERIVED_FROM_P (type, current_nonlambda_class_type ())
+      /* If we get here while parsing the parameter list of a lambda, it
+	 will fail, so don't even try (c++/60252).  */
+      && current_binding_level->kind != sk_function_parms)
     {
       /* In a lambda, need to go through 'this' capture.  */
       tree lam = CLASSTYPE_LAMBDA_EXPR (current_class_type);

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice11.C

+// PR c++/60252
+// { dg-require-effective-target c++11 }
+
+struct A
+{
+  int i;			// { dg-message "" }
+
+  void foo()
+  {
+    [&](){ [&](int[i]){}; };	// { dg-error "" }
+  }
+};