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bf21612344
Mop up assorted set-but-not-used warnings in the back branches. This includes back-patching relevant fixes from commit152c9f7b8the rest of the way, but there are also several cases that did not appear in HEAD. Some of those we'd fixed in a retail way but not back-patched, and others I think just got rewritten out of existence during nearby refactoring. While here, also back-patchb1980f6d0(PL/Tcl: Fix compiler warnings with Tcl 8.6) into 9.2, so that that branch compiles warning-free with modern Tcl. Per project policy, this is a candidate for back-patching into out-of-support branches: it suppresses annoying compiler warnings but changes no behavior. Hence, back-patch all the way to 9.2. Discussion: https://postgr.es/m/514615.1663615243@sss.pgh.pa.us
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 "gmake all" and "gmake
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.