Daniel Gustafsson a30a305584 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
2024-02-29 12:19:52 +01:00
..
2024-01-29 12:09:03 -06:00
2024-02-05 14:45:29 +01:00