| Index: pkg/fixnum/lib/src/int64.dart | 
| diff --git a/pkg/fixnum/lib/src/int64.dart b/pkg/fixnum/lib/src/int64.dart | 
| index 3ef0bc09be1f79f0f6ff8556524bbabce944a4fb..b2a263f273e2d19c608295fdc4d6ac9adeb007fe 100644 | 
| --- a/pkg/fixnum/lib/src/int64.dart | 
| +++ b/pkg/fixnum/lib/src/int64.dart | 
| @@ -625,7 +625,7 @@ class int64 implements intx { | 
| } | 
|  | 
| List<int> toBytes() { | 
| -    List<int> result = new List<int>(8); | 
| +    List<int> result = new List<int>.fixedLength(8); | 
| result[0] = _l & 0xff; | 
| result[1] = (_l >> 8) & 0xff; | 
| result[2] = ((_m << 6) & 0xfc) | ((_l >> 16) & 0x3f); | 
|  |