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5feb3d0b3f
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
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.