Re: some problem explicit_bzero with building PostgreSQL on linux

From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tuesday, March 7, 2023 at 9:14 AM
To: Dimitry Markman <dmarkman@mathworks.com>
Cc: pgsql-hackers@lists.postgresql.org <pgsql-hackers@lists.postgresql.org>, Bhavya Dabas <bdabas@mathworks.com>
Subject: Re: some problem explicit_bzero with building PostgreSQL on linux

Dimitry Markman <dmarkman@mathworks.com> writes:
> how we can guaranty that if HAVE_EXPLICIT_BZERO is not defined then
> explicit_bzero function implemented in port/explicit_bzero.c will be used (just like in Darwin or windows)

Did you remember to add explicit_bzero.o to LIBOBJS in
the configured Makefile.global?

If it still doesn't work, then evidently your toolchain is selecting
the system's built-in definition of explicit_bzero over the one in
src/port/.  This is not terribly surprising given that there has to be
some amount of compiler magic involved in that function.  You may have
to resort to actually building Postgres on a platform without
explicit_bzero.

                        regards, tom lane