diff options
| -rw-r--r-- | erts/emulator/beam/io.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index ebff564421..ddff862607 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -4887,10 +4887,18 @@ erts_port_control(Process* c_p, copy = 1; else { ProcBin *pb = (ProcBin *) ebinp; + int offset = bufp - pb->val->orig_bytes; - if (pb->flags) + ASSERT(pb->val->orig_bytes <= bufp + && bufp + size <= pb->val->orig_bytes + pb->val->orig_size); + + if (pb->flags) { erts_emasculate_writable_binary(pb); + /* The procbin may have been reallocated, so update bufp */ + bufp = pb->val->orig_bytes + offset; + } + binp = pb->val; ASSERT(bufp <= bufp + size); ASSERT(binp->orig_bytes <= bufp |