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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-03-28 17:09:51 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-03-28 17:09:51 -0400 |
| commit | 95f7ddfdad99c5ea0500d90ce52075814e10ed8c (patch) | |
| tree | 106ff772a77202b5fecc90afe0856e5cfe5cea40 /doc/src | |
| parent | 42750b08d946e2a5048454d7b4e127f0e1df3c65 (diff) | |
| download | postgresql-95f7ddfdad99c5ea0500d90ce52075814e10ed8c.tar.gz postgresql-95f7ddfdad99c5ea0500d90ce52075814e10ed8c.zip | |
Protect against overflow of ltree.numlevel and lquery.numlevel.
These uint16 fields could be overflowed by excessively long input,
producing strange results. Complain for invalid input.
Likewise check for out-of-range values of the repeat counts in lquery.
(We don't try too hard on that one, notably not bothering to detect
if atoi's result has overflowed.)
Also detect length overflow in ltree_concat.
In passing, be more consistent about whether "syntax error" messages
include the type name. Also, clarify the documentation about what
the size limit is.
This has been broken for a long time, so back-patch to all supported
branches.
Nikita Glukhov, reviewed by Benjie Gillam and Tomas Vondra
Discussion: https://postgr.es/m/CAP_rww=waX2Oo6q+MbMSiZ9ktdj6eaJj0cQzNu=Ry2cCDij5fw@mail.gmail.com
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ltree.sgml | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/doc/src/sgml/ltree.sgml b/doc/src/sgml/ltree.sgml index b4e07f65109..0c74aa705e9 100644 --- a/doc/src/sgml/ltree.sgml +++ b/doc/src/sgml/ltree.sgml @@ -37,8 +37,7 @@ A <firstterm>label path</firstterm> is a sequence of zero or more labels separated by dots, for example <literal>L1.L2.L3</literal>, representing a path from the root of a hierarchical tree to a particular node. The - length of a label path must be less than 65kB, but keeping it under 2kB is - preferable. + length of a label path cannot exceed 65535 labels. </para> <para> |