diff options
| -rw-r--r-- | erts/emulator/beam/io.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index 31396d06c6..9bf29ee230 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -4884,10 +4884,16 @@ erts_port_control(Process* c_p, ASSERT(!tmp_alloced); if (*ebinp == HEADER_SUB_BIN) ebinp = binary_val(((ErlSubBin *) ebinp)->orig); + if (*ebinp != HEADER_PROC_BIN) copy = 1; else { - binp = ((ProcBin *) ebinp)->val; + ProcBin *pb = (ProcBin *) ebinp; + + if (pb->flags) + erts_emasculate_writable_binary(pb); + + binp = pb->val; ASSERT(bufp <= bufp + size); ASSERT(binp->orig_bytes <= bufp && bufp + size <= binp->orig_bytes + binp->orig_size); |