| Index: dart/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
|
| diff --git a/dart/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart b/dart/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
|
| index 934044a9a490278e2596090b860156a4d97f6053..519cf6597926af90bd3f00803d0ed71a565d4c2f 100644
|
| --- a/dart/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
|
| +++ b/dart/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
|
| @@ -15,6 +15,7 @@ import "dart:_collection-dev" as _symbol_dev;
|
| String _symbolToString(Symbol symbol) => _symbol_dev.Symbol.getName(symbol);
|
|
|
| _symbolMapToStringMap(Map<Symbol, dynamic> map) {
|
| + if (map == null) return null;
|
| var result = new Map<String, dynamic>();
|
| map.forEach((Symbol key, value) {
|
| result[_symbolToString(key)] = value;
|
|
|