- Ensure that all names in local scopes are symbols.

runtime/vm/flow_graph_builder.cc

 // Copyright (c) 2012, 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/flow_graph_builder.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/ast_printer.h"
 #include "vm/bit_vector.h"
 #include "vm/class_finalizer.h"
@@ skipping 3451 matching lines @@
       ASSERT(scope->context_level() == 1);
       const Function& function = owner()->parsed_function()->function();
       const int num_params = function.NumParameters();
       int param_frame_index = (num_params == function.num_fixed_parameters()) ?
           (kParamEndSlotFromFp + num_params) : kFirstLocalSlotFromFp;
       for (int pos = 0; pos < num_params; param_frame_index--, pos++) {
         const LocalVariable& parameter = *scope->VariableAt(pos);
         ASSERT(parameter.owner() == scope);
         if (parameter.is_captured()) {
           // Create a temporary local describing the original position.
-          const String& temp_name = String::ZoneHandle(String::Concat(
-              parameter.name(), String::Handle(Symbols::New("-orig"))));
+          const String& temp_name = Symbols::TempParam();
           LocalVariable* temp_local = new LocalVariable(
               0,  // Token index.
               temp_name,
               Type::ZoneHandle(Type::DynamicType()));  // Type.
           temp_local->set_index(param_frame_index);
 
           // Copy parameter from local frame to current context.
           Value* load = Bind(BuildLoadLocal(*temp_local));
           Do(BuildStoreLocal(parameter, load));
           // Write NULL to the source location to detect buggy accesses and
@@ skipping 441 matching lines @@
                                   LanguageError::kError,
                                   Heap::kNew,
                                   "FlowGraphBuilder Bailout: %s %s",
                                   String::Handle(function.name()).ToCString(),
                                   reason));
   Isolate::Current()->long_jump_base()->Jump(1, error);
 }
 
 
 }  // namespace dart