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(parent: b3f6b14) | patch
Fix integer underflow in shared memory debugging
authorDaniel Gustafsson <[email protected]>
Thu, 29 Feb 2024 11:19:52 +0000 (12:19 +0100)
committerDaniel Gustafsson <[email protected]>
Thu, 29 Feb 2024 11:19:52 +0000 (12:19 +0100)
commit6fd144e3a9664ea545d10008c48dceb6c4e9d38a
tree9a4ca148e6be940934b4a9f78e42612524546117tree
parentb3f6b14cf48ffa81084072f1fdeee2fe9df20746commit | 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 <[email protected]>
Reviewed-by: Robert Haas <[email protected]>
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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