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We have collected several instances of a workaround for GCC bug 53119, which caused false-positive compiler warnings. This bug has long been fixed, but was still seen on the buildfarm, most recently on lapwing with gcc (Debian 4.7.2-5). (The GCC bug tracker mentions that a fix was backported to 4.7.4 and 4.8.3.) That compiler no longer runs warning-free since commit 6fdd5d95634, so we don't need to keep these workarounds. And furthermore, the consensus appears to be that we don't want to keep supporting that era of platform anymore at all. This reverts the following commits: d937904cce6a3d82e4f9c2127de7b59105a134b3 506428d091760650971433f6bc083531c307b368 b449afb582bb9015bfbb85abc10ce122aef9ec70 6392f2a0968c20ecde4d27b6652703ad931fce92 bad0763a4d7be3005eae35d460c73ac4bc7ebaad 5e0c761d0a13c7b4f7c5de618ac38560d74d74d0 and makes a few similar fixes to newer code. Discussion: https://www.postgresql.org/message-id/flat/e170d61f-01ab-4cf9-ab68-91cd1fac62c5%40eisentraut.org Discussion: https://www.postgresql.org/message-id/flat/CA%2BTgmoYEAm-KKZibAP3hSqbTFTjUd47XtVcf3xSFDpyecXX9uQ%40mail.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.