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Tom Lane a7aa61ffe7 Properly initialize SortSupport for ORDER BY rechecks in nodeIndexscan.c. 
Fix still another bug in commit 35fcb1b3d: it failed to fully initialize
the SortSupport states it introduced to allow the executor to re-check
ORDER BY expressions containing distance operators.  That led to a null
pointer dereference if the sortsupport code tried to use ssup_cxt.  The
problem only manifests in narrow cases, explaining the lack of previous
field reports.  It requires a GiST-indexable distance operator that lacks
SortSupport and is on a pass-by-ref data type, which among core+contrib
seems to be only btree_gist's interval opclass; and it requires the scan
to be done as an IndexScan not an IndexOnlyScan, which explains how
btree_gist's regression test didn't catch it.  Per bug #14134 from
Jihyun Yu.

Peter Geoghegan

Report: <20160511154904.2603.43889@wrigleys.postgresql.org>
2016-06-05 11:53:06 -04:00
..
adminpack Update copyright for 2015 2015-01-06 11:43:47 -05:00
auth_delay Add file version information to most installed Windows binaries. 2014-07-14 14:07:52 -04:00
auto_explain Rearrange explain.c's API so callers need not embed sizeof(ExplainState). 2015-01-15 13:39:33 -05:00
btree_gin pgindent run for 9.5 2015-05-23 21:35:49 -04:00
btree_gist Properly initialize SortSupport for ORDER BY rechecks in nodeIndexscan.c. 2016-06-05 11:53:06 -04:00
chkpass Avoid returning undefined bytes in chkpass_in(). 2015-02-14 12:20:56 -05:00
citext Fix incorrect declaration of citext's regexp_matches() functions. 2015-05-05 15:51:22 -04:00
cube Fix misc typos. 2015-09-05 11:36:18 +03:00
dblink Fix volatile-safety issue in dblink's materializeQueryResult(). 2015-01-26 15:17:33 -05:00
dict_int Update copyright for 2015 2015-01-06 11:43:47 -05:00
dict_xsyn Update copyright for 2015 2015-01-06 11:43:47 -05:00
earthdistance Improve speed of make check-world 2015-04-23 08:59:52 -04:00
file_fdw Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
fuzzystrmatch Remove new coupling between NAMEDATALEN and MAX_LEVENSHTEIN_STRLEN. 2016-01-22 11:53:06 -05:00
hstore Fix IsValidJsonNumber() to notice trailing non-alphanumeric garbage. 2016-02-03 01:39:08 -05:00
hstore_plperl Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
hstore_plpython Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
intagg Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
intarray Prevent stack overflow in query-type functions. 2015-10-05 10:06:33 -04:00
isn contrib/isn now needs a .gitignore file. 2015-08-02 23:57:42 -04:00
lo Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
ltree ltree: Zero padding bytes when allocating memory for externally visible data. 2016-03-08 14:59:29 -08:00
ltree_plpython Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
oid2name Add file version information to most installed Windows binaries. 2014-07-14 14:07:52 -04:00
pageinspect Remove unused macros. 2016-05-02 10:08:58 +03:00
passwordcheck Update copyright for 2015 2015-01-06 11:43:47 -05:00
pg_buffercache pgindent run for 9.5 2015-05-23 21:35:49 -04:00
pg_freespacemap Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
pg_prewarm Update copyright for 2015 2015-01-06 11:43:47 -05:00
pg_standby Make use of xlog_internal.h's macros in WAL-related utilities. 2015-07-02 10:36:18 +09:00
pg_stat_statements Avoid unlikely data-loss scenarios due to rename() without fsync. 2016-03-09 18:53:53 -08:00
pg_trgm Move strategy numbers to include/access/stratnum.h 2015-05-15 17:03:16 -03:00
pgcrypto Add forgotten CHECK_FOR_INTERRUPT calls in pgcrypto's crypt() 2015-12-27 13:03:19 -03:00
pgrowlocks Optimize locking a tuple already locked by another subxact 2015-04-10 13:47:15 -03:00
pgstattuple Remove unused macros. 2016-05-02 10:08:58 +03:00
postgres_fdw postgres_fdw: Avoid possible misbehavior when RETURNING tableoid column only. 2016-02-04 22:27:38 -05:00
seg Revert "Convert contrib/seg's bool-returning SQL functions to V1 call convention." 2016-04-28 11:48:10 -04:00
sepgsql Fix sepgsql regression tests. 2015-08-30 11:09:19 -07:00
spi Collection of typo fixes. 2015-05-20 16:56:22 +03:00
sslinfo Fix error message wording in previous sslinfo commit 2015-09-08 11:10:20 -03:00
start-scripts Fix typo in linux startup script. 2015-04-26 09:43:15 -04:00
tablefunc Fix a number of places that produced XX000 errors in the regression tests. 2015-08-02 23:49:19 -04:00
tcn Update copyright for 2015 2015-01-06 11:43:47 -05:00
test_decoding Fix core dump in ReorderBufferRestoreChange on alignment-picky platforms. 2016-04-14 19:42:22 -04:00
tsearch2 Update copyright for 2015 2015-01-06 11:43:47 -05:00
tsm_system_rows Redesign tablesample method API, and do extensive code review. 2015-07-25 14:39:00 -04:00
tsm_system_time Some platforms now need contrib/tsm_system_time to be linked with libm. 2015-07-25 16:37:22 -04:00
unaccent Update copyright for 2015 2015-01-06 11:43:47 -05:00
uuid-ossp Update copyright for 2015 2015-01-06 11:43:47 -05:00
vacuumlo vacuumlo: Avoid unlikely memory leak. 2015-01-14 15:14:20 -05:00
xml2 Replace a bunch more uses of strncpy() with safer coding. 2015-01-24 13:05:42 -05:00
contrib-global.mk Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
Makefile Finish removing pg_audit 2015-05-28 12:48:25 -04:00
README Rename 'gmake' to 'make' in docs and recommended commands 2014-02-12 17:29:19 -05:00

README 

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree.  This does not preclude their
usefulness.

User documentation for each module appears in the main SGML
documentation.

When building from the source distribution, these modules are not
built automatically, unless you build the "world" target.  You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.

Some directories supply new user-defined functions, operators, or
types.  To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command.  In a fresh database,
you can simply do

    CREATE EXTENSION module_name;

See the PostgreSQL documentation for more information about this
procedure.