diff options
Diffstat (limited to 'rts/TopHandler.c')
-rw-r--r-- | rts/TopHandler.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/rts/TopHandler.c b/rts/TopHandler.c index d5175015e7..f3ab55c85e 100644 --- a/rts/TopHandler.c +++ b/rts/TopHandler.c @@ -28,6 +28,10 @@ StgTSO *getTopHandlerThread(void) { ACQUIRE_LOCK(&m); StgWeak *weak = (StgWeak*)deRefStablePtr(topHandlerPtr); RELEASE_LOCK(&m); + if (weak == NULL) { + // topHandlerPtr was never initialised + return NULL; + } const StgInfoTable *info = weak->header.info; load_load_barrier(); if (info == &stg_WEAK_info) { |