Properly handle implicit closure function when a generic function.

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1071 matching lines @@
           __ StoreObject(Address(RBP, (slot_base - i) * kWordSize),
                          Object::empty_context());
         }
       } else {
         ASSERT(num_locals > 1);
         __ movq(Address(RBP, (slot_base - i) * kWordSize), RAX);
       }
     }
   }
 
+  if (FLAG_reify_generic_functions) {
+    // TODO(regis): Check function type arguments of a generic function.
+    // For now, verify that a local variable has been allocated when necessary.
+    ASSERT((function.NumTypeParameters() == 0) ||
+           (parsed_function().function_type_arguments() != NULL));
+    // TODO(regis): Allocate and prepend parent type arguments when necessary.
+    ASSERT(!function.HasGenericParent() ||
+           (parsed_function().parent_type_arguments() != NULL));
+  }
+
   EndCodeSourceRange(TokenPosition::kDartCodePrologue);
   ASSERT(!block_order().is_empty());
   VisitBlocks();
 
   __ int3();
   ASSERT(assembler()->constant_pool_allowed());
   GenerateDeferredCode();
 }
 
 
@@ skipping 692 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64