Fix various memory leaks in psql's describe commands \d*
authorMichael Paquier <michael@paquier.xyz>
Thu, 21 Jul 2022 01:41:33 +0000 (10:41 +0900)
committerMichael Paquier <michael@paquier.xyz>
Thu, 21 Jul 2022 01:41:33 +0000 (10:41 +0900)
commit171ab95f64493f30dccf34bb1cafaa7b4957cd4e
tree05cb06267c00e07ab24003ece21eab492293244b
parentaf119e08fd147e808927b1a4c9f091636d52eb45
Fix various memory leaks in psql's describe commands \d*

Most of these have been introduced in d2d3547 with the new pattern
validation logic, and would leak memory worth an amount of one
PQExpBuffer each time (as of 256 bytes at minimum, possibly more).

Most of the patch has been written by Tang Haiying, with a few tweaks
coming from Álvaro Herrera.

Reported-by: Tang Haiying
Author: Tang Haiying, Álvaro Herrera
Reviewed-by: Mark Dilger, Andres Freund, Álvaro Herrera, Tom Lane, Japin
Li, Michael Paquier, Junwang Zhao
Backpatch-through: 15
src/bin/psql/describe.c