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(parent: c0b4dad) | patch
Fix integer underflow in shared memory debugging
authorDaniel Gustafsson <dgustafsson@postgresql.org>
Thu, 29 Feb 2024 11:19:52 +0000 (12:19 +0100)
committerDaniel Gustafsson <dgustafsson@postgresql.org>
Thu, 29 Feb 2024 11:19:52 +0000 (12:19 +0100)
commit24dc4afebd5a82f30aed6bd18d48ff42ef787410
tree851e7a5e508313773fbdc9fda64d9da27e1201b9tree | snapshot
parentc0b4dad38e84d4b5f25391b97f0d51b66eb020f2commit | diff
Fix integer underflow in shared memory debugging

dsa_dump would print a large negative number instead of zero for
segment bin 0.  Fix by explicitly checking for underflow and add
special case for bin 0. Backpatch to all supported versions.

Author: Ian Ilyasov <ianilyasov@outlook.com>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/GV1P251MB1004E0D09D117D3CECF9256ECD502@GV1P251MB1004.EURP251.PROD.OUTLOOK.COM
Backpatch-through: v12
src/backend/utils/mmgr/dsa.c diff | blob | blame | history
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