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39369b4145
This seems to be largely cosmetic, avoiding valgrind bleats and the like. The uninitialized padding influences the CRC of the on-disk entry, but because it's also used when verifying the CRC, that doesn't cause spurious failures. Backpatch nonetheless. It's a bit unfortunate that contrib/test_decoding/sql/replorigin.sql doesn't exercise the checkpoint path, but checkpoints are fairly expensive on weaker machines, and we'd have to stop/start for that to be meaningful. Author: Andres Freund Discussion: https://postgr.es/m/20170422183123.w2jgiuxtts7qrqaq@alap3.anarazel.de Backpatch: 9.5, where replication origins were introduced