Make GetSnapshotData() more resilient on out-of-memory errors If the allocation of Snapshot->subxip fails, a follow-up call of GetSnapshotData() would see a partially-initialized snapshot, causing a NULL dereference on reentry when using "subxip" because only "xip" would be allocated. In the event of an out-of-memory error when allocating "subxip", "xip" is now reset before throwing an ERROR, so as Snapshots can be allocated and handled gracefully on retry.
This problem is unlikely going to show up in practice, so no backpatch. Reported-by: Alexander Lakhin <[email protected]> Author: Matthias van de Meent <[email protected]> Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/29fb598b9cad898ef851b9a7704f980218057562 Modified Files -------------- src/backend/storage/ipc/procarray.c | 8 ++++++++ 1 file changed, 8 insertions(+)
