Tom Lane 330cad2c4b 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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data
expected	Fix crash in contrib/ltree's lca() function for empty input array.	2018-07-13 18:45:30 -04:00
sql	Fix crash in contrib/ltree's lca() function for empty input array.	2018-07-13 18:45:30 -04:00
_ltree_gist.c
_ltree_op.c
.gitignore
crc32.c
crc32.h
lquery_op.c
ltree_gist.c
ltree_io.c
ltree_op.c	Fix crash in contrib/ltree's lca() function for empty input array.	2018-07-13 18:45:30 -04:00
ltree--1.0--1.1.sql	Update extensions with GIN/GIST support for parallel query.	2016-06-14 13:34:37 -04:00
ltree--1.1.sql	Update extensions with GIN/GIST support for parallel query.	2016-06-14 13:34:37 -04:00
ltree--unpackaged--1.0.sql
ltree.control
ltree.h
ltreetest.sql
ltxtquery_io.c	Spelling fixes	2017-03-14 13:45:54 -04:00
ltxtquery_op.c
Makefile