Re: PostgreSQL 12 crash with segmentation violation in heap_freetuple

in current 12 branch I get

make[2]: Verzeichnis „/opt/postgresql/src/backend/parser“ wird betreten
'/usr/bin/perl' ./check_keywords.pl gram.y ../../../src/include/parser/kwlist.h
/usr/bin/bison -Wno-deprecated  -d -o gram.c gram.y
/usr/bin/bison: invalid option -- 'W'
Usage: /usr/bin/bison [-dltvyVu] [-b file-prefix] [-p name-prefix]

Thank you
Marcel

Marcel Ruff <ruff@netwake.com> writes:

I have compiled
   git clone git://git.postgresql.org/git/postgresql.git
to find out if this is more stable.
But /pg_ctl start/ says:
  /"The data directory was initialized by PostgreSQL version 12, which
is not compatible with this version 13devel"/

You should do "git checkout REL_12_STABLE" and build from that branch.

(It's advisable to do "git clean -dfx" to make sure you don't have
any leftover build products from the master-branch build, first.
The build process isn't natively smart enough to deal with this
scenario reliably.)
		regards, tom lane