Re: RTLD_GLOBAL (& JIT inlining)

On Mon, Feb 26, 2018 at 11:28 PM, Andres Freund <andres@anarazel.de> wrote:
> So RTLD_LOCAL is out of the question, but I think we can get a good bit
> of the benefit by either specifying -Wl,-Bsymbolic at shlib build time,
> or RTLD_DEEPBIND at dlopen() time.  Either leads to the opened shared
> library effectively being put at the beginning of the search path,
> therefore avoiding the issue that an earlier loaded shared library or
> symbols from the main binary can accidentally overwrite things in the
> shared library itself. Which incidentally also makes loading a bit
> faster.

I think this would also fix oracle_fdw crashing when postgres is
compiled with --with-ldap. At least RTLD_DEEPBIND helped. [1]

[1] https://www.postgresql.org/message-id/CA%2BCSw_tPDYgnzCYW0S4oU0mTUoUhZ9pc7MRBPXVD-3Zbiwni9w%40mail.gmail.com

Ants Aasma