Re: Regression tests fail with musl libc because libpq.so can't be loaded

On Wed, Mar 20, 2024 at 2:53 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Thomas Munro <thomas.munro@gmail.com> writes:
> > Yep.  How long is /proc/XXX/cmdline (check with wc -c /proc/...) in a
> > postmaster near you?  You'd always get that much, plus as much of
> > /proc/XXX/environ as we can find before you reach LD_XXX=, which on a
> > typical system would, I guess, usually be never.
>
> I'd be happier about this if the target pattern were more restrictive.
> Is there reason to think that musl keeps a pointer to anything besides
> LD_LIBRARY_PATH?

Also LD_PRELOAD:

https://github.com/bminor/musl/blob/7ada6dde6f9dc6a2836c3d92c2f762d35fd229e0/ldso/dynlink.c#L1824

Yeah we could do just those two.