X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fsm%2FGCAux.c;h=66806f4d3fe43f701eb3d3f378a9a9f7a4e2cb77;hb=66579ff945831c5fc9a17c58c722ff01f2268d76;hp=0fb61f16a214508f07d4a151a14f0cbd04e0afca;hpb=04cddd339c000df6d02c90ce59dbffa58d2fe166;p=ghc-hetmet.git

diff --git a/rts/sm/GCAux.c b/rts/sm/GCAux.c
index 0fb61f1..66806f4 100644
--- a/rts/sm/GCAux.c
+++ b/rts/sm/GCAux.c
@@ -41,7 +41,6 @@ isAlive(StgClosure *p)
     q = UNTAG_CLOSURE(p);
 
     ASSERT(LOOKS_LIKE_CLOSURE_PTR(q));
-    info = get_itbl(q);
 
     // ignore static closures 
     //
@@ -63,14 +62,28 @@ isAlive(StgClosure *p)
 
     // large objects use the evacuated flag
     if (bd->flags & BF_LARGE) {
+        if (get_itbl(q)->type == TSO &&
+            ((StgTSO *)p)->what_next == ThreadRelocated) {
+            p = (StgClosure *)((StgTSO *)p)->_link;
+            continue;
+        }
 	return NULL;
     }
 
     // check the mark bit for compacted steps
-    if ((bd->flags & BF_COMPACTED) && is_marked((P_)q,bd)) {
+    if ((bd->flags & BF_MARKED) && is_marked((P_)q,bd)) {
 	return p;
     }
 
+    info = q->header.info;
+
+    if (IS_FORWARDING_PTR(info)) {
+        // alive! 
+        return (StgClosure*)UN_FORWARDING_PTR(info);
+    }
+
+    info = INFO_PTR_TO_STRUCT(info);
+
     switch (info->type) {
 
     case IND:
@@ -82,10 +95,6 @@ isAlive(StgClosure *p)
       p = ((StgInd *)q)->indirectee;
       continue;
 
-    case EVACUATED:
-      // alive! 
-      return ((StgEvacuated *)q)->evacuee;
-
     case TSO:
       if (((StgTSO *)q)->what_next == ThreadRelocated) {
 	p = (StgClosure *)((StgTSO *)q)->_link;