| Index: src/flag-definitions.h | 
| diff --git a/src/flag-definitions.h b/src/flag-definitions.h | 
| index 4a0d3c661a24cb6ecd292441f53fcb11d16941ee..8f32acac7d1c8a1b9110e84bc4ac08bc2137fdef 100644 | 
| --- a/src/flag-definitions.h | 
| +++ b/src/flag-definitions.h | 
| @@ -407,7 +407,7 @@ DEFINE_bool(trace_external_memory, false, | 
| "it is adjusted.") | 
| DEFINE_bool(collect_maps, true, | 
| "garbage collect maps from which no objects can be reached") | 
| -DEFINE_bool(weak_embedded_maps_in_optimized_code, false, | 
| +DEFINE_bool(weak_embedded_maps_in_optimized_code, true, | 
| "make maps embedded in optimized code weak") | 
| DEFINE_bool(flush_code, true, | 
| "flush code that we expect not to use again (during full gc)") | 
|  |