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-rw-r--r--erts/emulator/beam/erl_bif_port.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index afb33c1cdb..8a622e5e6e 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -554,6 +554,7 @@ BIF_RETTYPE port_set_data_2(BIF_ALIST_2)
hp = &pdhp->heap[0];
pdhp->off_heap.first = NULL;
pdhp->off_heap.overhead = 0;
+ pdhp->hsize = hsize;
pdhp->data = copy_struct(BIF_ARG_2, hsize, &hp, &pdhp->off_heap);
data = (erts_aint_t) pdhp;
ASSERT((data & 0x3) == 0);