Handle NULL for short descriptions of custom GUC variables If a short description is specified as NULL in one of the various DefineCustomXXXVariable() functions available to external modules to define a custom parameter, SHOW ALL would crash. This change teaches SHOW ALL to properly handle NULL short descriptions, as well as any code paths that manipulate it, to gain in flexibility. Note that help_config.c was already able to do that, when describing a set of GUCs for postgres --describe-config.
Author: Steve Chavez Reviewed by: Nathan Bossart, Andres Freund, Michael Paquier, Tom Lane Discussion: https://postgr.es/m/CAGRrpzY6hO-Kmykna_XvsTv8P2DshGiU6G3j8yGao4mk0CqjHA%40mail.gmail.com Backpatch-through: 10 Branch ------ REL_10_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/1b40ceea24e61b246a09f9ab42f8e82594a418df Modified Files -------------- src/backend/utils/misc/guc.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
