re PR c++/63320 (bogus ‘this’ was not captured for this lambda function error)

	PR c++/63320
	PR c++/60463
	PR c++/60755
	* lambda.c (maybe_resolve_dummy, lambda_expr_this_capture): Handle
	not finding 'this'.

From-SVN: r215478

gcc/cp/ChangeLog

+2014-09-22  Jason Merrill  <jason@redhat.com>
+
+	PR c++/63320
+	PR c++/60463
+	PR c++/60755
+	* lambda.c (maybe_resolve_dummy, lambda_expr_this_capture): Handle
+	not finding 'this'.
+
 2014-09-22  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/62219

gcc/cp/lambda.c

@@ -724,7 +724,8 @@ lambda_expr_this_capture (tree lambda, bool add_capture_p)
 
   if (!this_capture)
     {
-      error ("%<this%> was not captured for this lambda function");
+      if (add_capture_p)
+	error ("%<this%> was not captured for this lambda function");
       result = error_mark_node;
     }
   else
@@ -768,8 +769,9 @@ maybe_resolve_dummy (tree object, bool add_capture_p)
       /* In a lambda, need to go through 'this' capture.  */
       tree lam = CLASSTYPE_LAMBDA_EXPR (current_class_type);
       tree cap = lambda_expr_this_capture (lam, add_capture_p);
-      object = build_x_indirect_ref (EXPR_LOCATION (object), cap,
-				     RO_NULL, tf_warning_or_error);
+      if (cap != error_mark_node)
+	object = build_x_indirect_ref (EXPR_LOCATION (object), cap,
+				       RO_NULL, tf_warning_or_error);
     }
 
   return object;

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice3.C

@@ -3,7 +3,7 @@
 
 class Klass
 {
-  unsigned int local;
+  unsigned int local;		// { dg-error "non-static" }
 public:
   bool dostuff();
 };
@@ -11,7 +11,7 @@ public:
 bool Klass::dostuff()
 {
   auto f = []() -> bool {
-    if (local & 1) { return true; } // { dg-error "not captured" }
+    if (local & 1) { return true; } // { dg-error "not captured|this location" }
     return false;
   };
 }

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-this19.C

+// PR c++/63320
+// { dg-do compile { target c++11 } }
+
+class A {
+  static void addWindow();
+  static void activateWindow(void *);
+};
+void A::addWindow() {
+  int* action {};
+  [action] { activateWindow(action); };
+}