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-rw-r--r--rts/TraverseHeap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/rts/TraverseHeap.c b/rts/TraverseHeap.c
index 882d1095c3..8938da2462 100644
--- a/rts/TraverseHeap.c
+++ b/rts/TraverseHeap.c
@@ -16,6 +16,8 @@
#include "TraverseHeap.h"
+const stackData nullStackData;
+
StgWord getTravData(const StgClosure *c)
{
const StgWord hp_hdr = c->header.prof.hp.trav;