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-rw-r--r--ghc/rts/Storage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ghc/rts/Storage.c b/ghc/rts/Storage.c
index 1c14265f49..195f410e5d 100644
--- a/ghc/rts/Storage.c
+++ b/ghc/rts/Storage.c
@@ -772,7 +772,7 @@ dirty_MUT_VAR(StgRegTable *reg, StgClosure *p)
bdescr *bd;
if (p->header.info == &stg_MUT_VAR_CLEAN_info) {
p->header.info = &stg_MUT_VAR_DIRTY_info;
- bd = Bdescr(p);
+ bd = Bdescr((StgPtr)p);
if (bd->gen_no > 0) recordMutableCap(p,cap,bd->gen_no);
}
}