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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2023-05-16 10:53:42 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2023-05-16 10:53:42 -0400 |
| commit | 8084bf9a493d577bb2d0d902388ed3fd48859c05 (patch) | |
| tree | 83b101430d6b71d19d5acddfe393bf7ec5a104f6 /contrib/pg_visibility/pg_visibility.c | |
| parent | f96e531b1c079ae148b927a204845c7150a573f8 (diff) | |
| download | postgresql-REL_11_STABLE.tar.gz | |
Ensure Soundex difference() function handles empty input sanely.REL_11_STABLE
fuzzystrmatch's difference() function assumes that _soundex()
always initializes its output buffer fully. This was not so for
the case of a string containing no alphabetic characters, resulting
in unstable output and Valgrind complaints.
Fix by using memset() to fill the whole buffer in the early-exit
case. Also make some cosmetic improvements (I didn't care for the
random switches between "instr[0]" and "*instr" notation).
Report and diagnosis by Alexander Lakhin (bug #17935).
Back-patch to all supported branches.
Discussion: https://postgr.es/m/17935-b99316aa79c18513@postgresql.org
Diffstat (limited to 'contrib/pg_visibility/pg_visibility.c')
0 files changed, 0 insertions, 0 deletions