Tom Lane 67665a71c0 Fix regexport.c to behave sanely with lookaround constraints. ... regexport.c thought it could just ignore LACON arcs, but the correct behavior is to treat them as satisfiable while consuming zero input (rather reminiscently of commit 9f1e642d5). Otherwise, the emitted simplified-NFA representation may contain no paths leading from initial to final state, which unsurprisingly confuses pg_trgm, as seen in bug #14623 from Jeff Janes. Since regexport's output representation has no concept of an arc that consumes zero input, recurse internally to find the next normal arc(s) after any LACON transitions. We'd be forced into changing that representation if a LACON could be the last arc reaching the final state, but fortunately the regex library never builds NFAs with such a configuration, so there always is a next normal arc. Back-patch to 9.3 where this logic was introduced. Discussion: https://postgr.es/m/20170413180503.25948.94871@wrigleys.postgresql.org		2017-04-13 17:18:35 -04:00
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backend	Fix regexport.c to behave sanely with lookaround constraints.	2017-04-13 17:18:35 -04:00
bin	Back-patch checkpoint clarification docs and pg_basebackup updates	2017-04-01 17:27:12 +02:00
common	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
include	Improve castNode notation by introducing list-extraction-specific variants.	2017-04-10 13:51:29 -04:00
interfaces	Spelling fixes	2017-03-14 13:45:51 -04:00
makefiles	Link $(WIN32RES) into single-file modules only when PGFILEDESC is set.	2015-08-05 20:45:21 -04:00
pl	Adjust PL/Tcl regression test to dodge a possible bug or zone dependency.	2017-02-19 16:14:52 -05:00
port	Stamp 9.5.6.	2017-02-06 16:47:25 -05:00
template	AIX: Test the -qlonglong option before use.	2015-07-17 03:01:29 -04:00
test	Fix integer-overflow problems in interval comparison.	2017-04-05 23:51:28 -04:00
timezone	Update time zone data files to tzdata release 2016j.	2017-01-30 11:40:46 -05:00
tools	MSVC: Include pg_recvlogical in client-only install.	2016-09-19 14:27:08 -04:00
tutorial	Remove no-longer-required function declarations.	2015-05-24 12:20:23 -04:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
bcc32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
DEVELOPERS	Replace a couple of references to files that no longer exist in the source	2009-05-04 08:08:47 +00:00
Makefile	Install TAP test infrastructure so it's available for extension testing.	2016-09-23 15:50:00 -04:00
Makefile.global.in	Document usage of COPT environment variable for adjusting configure flags.	2017-02-17 16:11:02 -05:00
Makefile.shlib	Fix typos in comments.	2017-02-06 11:34:18 +02:00
nls-global.mk	nls-global.mk: search build dir for source files, too	2016-06-07 18:55:18 -04:00
win32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00