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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-05-07 15:59:52 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-05-07 15:59:52 -0400 |
| commit | 5db48808c4d5c3641b76d442ba7e7d8916adadf4 (patch) | |
| tree | 5666bd33283fbde01ae27253260c24a4a7fd24be /src/backend/access/gist/gist.c | |
| parent | 59273a7cec34e5bb8a9483f23a03e3318b52d65b (diff) | |
| download | postgresql-5db48808c4d5c3641b76d442ba7e7d8916adadf4.tar.gz postgresql-5db48808c4d5c3641b76d442ba7e7d8916adadf4.zip | |
Fix YA text phrase search bug.
checkcondition_str() failed to report multiple matches for a prefix
pattern correctly: it would dutifully merge the match positions, but
then after exiting that loop, if the last prefix-matching word had
had no suitable positions, it would report there were no matches.
The upshot would be failing to recognize a match that the query
should match.
It looks like you need all of these conditions to see the bug:
* a phrase search (else we don't ask for match position details)
* a prefix search item (else we don't get to this code)
* a weight restriction (else checkclass_str won't fail)
Noted while investigating a problem report from Pavel Borisov,
though this is distinct from the issue he was on about.
Back-patch to 9.6 where phrase search was added.
Diffstat (limited to 'src/backend/access/gist/gist.c')
0 files changed, 0 insertions, 0 deletions