diff options
Diffstat (limited to 'rts/sm/NonMovingMark.c')
| -rw-r--r-- | rts/sm/NonMovingMark.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/rts/sm/NonMovingMark.c b/rts/sm/NonMovingMark.c index a42c3c46ce..98aef4ce47 100644 --- a/rts/sm/NonMovingMark.c +++ b/rts/sm/NonMovingMark.c @@ -1281,7 +1281,10 @@ mark_closure (MarkQueue *queue, const StgClosure *p0, StgClosure **origin) bd = Bdescr((StgPtr) p); - if (bd->gen != oldest_gen) { + // This must be a relaxed load since the object may be a large object, + // in which case evacuation by the moving collector will result in + // mutation. + if (RELAXED_LOAD(&bd->gen) != oldest_gen) { // Here we have an object living outside of the non-moving heap. While // we likely evacuated nearly everything to the nonmoving heap during // preparation there are nevertheless a few ways in which we might trace |