Prevent shm_mq_send from reading uninitialized memory.
shm_mq_send_bytes didn't invariably initialize *bytes_written before
returning, which would cause shm_mq_send to read from uninitialized
memory and add the value it found there to mqh->mqh_partial_bytes.
This could cause the next attempt to send a message via the queue to
fail an assertion (if the queue was detached) or copy data from a
garbage pointer value into the queue (if non-blocking mode was in use).
Branch
------
REL9_4_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/df58a17df29f7ec0ffc8389deee46e81a2a58a60
Modified Files
--------------
src/backend/storage/ipc/shm_mq.c | 7 +++++++
1 file changed, 7 insertions(+)
