Tom Lane 28a1ae5342 Fix crash in contrib/ltree's lca() function for empty input array. ... lca_inner() wasn't prepared for the possibility of getting no inputs. Fix that, and make some cosmetic improvements to the code while at it. Also, I thought the documentation of this function as returning the "longest common prefix" of the paths was entirely misleading; it really returns a path one shorter than the longest common prefix, for the typical definition of "prefix". Don't use that term in the docs, and adjust the examples to clarify what really happens. This has been broken since its beginning, so back-patch to all supported branches. Per report from Hailong Li. Thanks to Pierre Ducroquet for diagnosing and for the initial patch, though I whacked it around some and added test cases. Discussion: https://postgr.es/m/5b0d8e4f-f2a3-1305-d612-e00e35a7be66@qunar.com		2018-07-13 18:45:30 -04:00
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src	Fix crash in contrib/ltree's lca() function for empty input array.	2018-07-13 18:45:30 -04:00
bug.template	Stamp HEAD as 12devel	2018-06-30 12:47:59 -04:00
KNOWN_BUGS	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
MISSING_FEATURES	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
TODO	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00