Don't try to translate NULL in GetConfigOptionByNum().
authorAndres Freund <andres@anarazel.de>
Wed, 23 Mar 2022 20:05:59 +0000 (13:05 -0700)
committerAndres Freund <andres@anarazel.de>
Wed, 23 Mar 2022 20:05:59 +0000 (13:05 -0700)
commit3ac7d024122f26d828907f15d088dcd67d2eb4f1
tree40f2a165b89a34d75a0a468c647095ddba444d5b
parent1c6bb380e5aba195204a9c6d0b4713bd1b3dec9c
Don't try to translate NULL in GetConfigOptionByNum().

Noticed via -fsanitize=undefined. Introduced when a few columns in
GetConfigOptionByNum() / pg_settings started to be translated in 72be8c29a /
PG 12.

Backpatch to all affected branches, for the same reasons as 46ab07ffda9.

Discussion: https://postgr.es/m/20220323173537.ll7klrglnp4gn2um@alap3.anarazel.de
Backpatch: 12-
src/backend/utils/misc/guc.c