removeThreadFromQueue: stub out the link field before returning (#4813)

3d7ffacd · Simon Marlow · 42c62ec7 · 3d7ffacd
Commit 3d7ffacd authored Dec 02, 2010 by Simon Marlow
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Showing with 4 additions and 1 deletion

rts/Threads.c rts/Threads.c +4 -1

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--- a/rts/Threads.c
+++ b/rts/Threads.c
@@ -163,9 +163,11 @@ removeThreadFromQueue (Capability *cap, StgTSO **queue, StgTSO *tso)
 	if (t == tso) {
 	    if (prev) {
 		setTSOLink(cap,prev,t->_link);
+                t->_link = END_TSO_QUEUE;
                return rtsFalse;
 	    } else {
 		*queue = t->_link;
+                t->_link = END_TSO_QUEUE;
                return rtsTrue;
 	    }
 	}
@@ -190,7 +192,8 @@ removeThreadFromDeQueue (Capability *cap,
 		*head = t->_link;
                flag = rtsTrue;
 	    }
-	    if (*tail == tso) {
+            t->_link = END_TSO_QUEUE;
+            if (*tail == tso) {
 		if (prev) {
 		    *tail = prev;
 		} else {