Fix issue with EVENT TRIGGERS and ALTER PUBLICATION When processing the "publish" options of an ALTER PUBLICATION command, we call SplitIdentifierString() to split the options into a List of strings. Since SplitIdentifierString() modifies the delimiter character and puts NULs in their place, this would overwrite the memory of the AlterPublicationStmt. Later in AlterPublicationOptions(), the modified AlterPublicationStmt is copied for event triggers, which would result in the event trigger only seeing the first "publish" option rather than all options that were specified in the command.
To fix this, make a copy of the string before passing to SplitIdentifierString(). Here we also adjust a similar case in the pgoutput plugin. There's no known issues caused by SplitIdentifierString() here, so this is being done out of paranoia. Thanks to Henson Choi for putting together an example case showing the ALTER PUBLICATION issue. Author: sunil s <[email protected]> Reviewed-by: Henson Choi <[email protected]> Reviewed-by: zengman <[email protected]> Backpatch-through: 14 Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/0687a6eb03b6f25527c2a6b61e43679e496499d3 Modified Files -------------- src/backend/commands/publicationcmds.c | 7 ++++++- src/backend/replication/pgoutput/pgoutput.c | 6 +++++- 2 files changed, 11 insertions(+), 2 deletions(-)
