On Wed, Aug 11, 2021 at 7:07 AM Thomas Munro <thomas.mu...@gmail.com> wrote: > On Wed, Aug 11, 2021 at 2:12 AM Andres Freund <and...@anarazel.de> wrote: > > On Tue, Aug 10, 2021, at 15:19, Thomas Munro wrote: > > > Yeah, make check always fails for me on macOS 11. With the attached > > > experimental hack, it fails only occasionally (1 in 8 runs or so). I > > > don't know why. > > > > I suspect you'd need to use the hack in pg_ctl to make it reliable. The > > layout of normally stayed position independent postmaster can be > > incompatible with the non ASLR spawned child. > > Yeah, but the patch already changes both pg_ctl.c and postmaster.c.
/me stares at vmmap output for a while Oooh. It's working perfectly (for example if you export PATH=binarys:$PATH, pg_ctl -D pgdata start, make installcheck), but pg_regress.c has its own separate fork/exec to launch the temporary cluster that needs to be similarly hacked. Unfortunately I have to give this Macintosh back and go and do some real work on a different computer now. That does seem to be a working solution to the problem, though, and could be polished into proposable form. I saw claims that you can also link with -Wl,-no_pie or toggle the PIE bit on your executable and libraries, but that didn't work for me on 11, Intel (no effect) or ARM (linker option gone).
