Re: Postmaster self-deadlock due to PLT linkage resolution

On Tue, Aug 30, 2022 at 8:17 AM Thomas Munro <thomas.munro@gmail.com> wrote:
> FWIW I suspect FreeBSD can't break like this in a program linked with
> libthr, because it has a scheme for deferring signals while the
> runtime linker holds locks.  _rtld_bind calls _thr_rtld_rlock_acquire,
> which uses the THR_CRITICAL_ENTER mechanism to cause thr_sighandler to
> defer until release.  For a non-thread program, I'm not entirely sure,
> but I don't think the fork() problem exists there.  (Could be wrong,
> based on a quick look.)

Well that seems a bit ironic, considering that Tom has worried in the
past that linking with threading libraries would break stuff.

-- 
Robert Haas
EDB: http://www.enterprisedb.com