Add missing NULL terminator to list_SECURITY_LABEL_preposition[].

On the machines I tried this on, pressing TAB after SECURITY LABEL led to
being offered ON and FOR as intended, plus random other keywords (varying
across machines).  But if you were a bit more unlucky you'd get a crash,
as reported by [email protected] in bug #14019.

Seems to have been an aboriginal error in the SECURITY LABEL patch,
commit 4d355a8336e0f226.  Hence, back-patch to all supported versions.
There's no bug in HEAD, though, thanks to our recent tab-completion
rewrite.

diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index a789f2b4c33ba89e9695c1be917a674535e1df93..73fc349bf0214c1e3883d5b49b5b3fe28e61b13a 100644 (file)
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -3419,7 +3419,7 @@ psql_completion(const char *text, int start, int end)
             pg_strcasecmp(prev_wd, "LABEL") == 0)
    {
        static const char *const list_SECURITY_LABEL_preposition[] =
-       {"ON", "FOR"};
+           {"ON", "FOR", NULL};
 
        COMPLETE_WITH_LIST(list_SECURITY_LABEL_preposition);
    }