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949e2e7c4f
We shouldn't set successor[whatever] to an offset number that is less than FirstOffsetNumber or more than maxoff. We already avoided that for redirects, but not for CTID links. Allowing bad offset numbers into the successor[] array causes core dumps. We shouldn't use HeapTupleHeaderIsHotUpdated() because it checks stuff other than the status of the infomask2 bit HEAP_HOT_UPDATED. We only care about the status of that bit, not the other stuff that HeapTupleHeaderIsHotUpdated() checks. This mistake can cause verify_heapam() to report corruption when none is present. The first hunk of this patch was written by me. The other two were written by Andres Freund. This could probably do with more review before commit, but I'd like to try to get the buildfarm green again sooner rather than later. Discussion: http://postgr.es/m/20230322204552.s6cv3ybqkklhhybb@awork3.anarazel.de
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.