| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, walther(at)technowledgy(dot)de, Christophe Pettus <xof(at)thebuild(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL Bugs <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: Regression tests fail with musl libc because libpq.so can't be loaded |
| Date: | 2024-03-25 22:54:59 |
| Message-ID: | CA+hUKGKU_0hmqem_EmAwePjVtMrjZNyNN0niUdBhuABajRwyhw@mail.gmail.com |
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On Tue, Mar 26, 2024 at 11:46 AM Peter Eisentraut <peter(at)eisentraut(dot)org> wrote:
> What determines which variables require this treatment?
That came from me peeking at their code:
I had originally proposed to avoid anything beginning "LD_" but Tom
suggested being more specific. I doubt LD_PRELOAD can really hurt you
though (the linker probably only needs the value at the start by
definition, not at later dlopen() time (?)). I dunno. If you're
asking if there is any standard or whatever supplying these names, the
System V or at least ELF standards talk about LD_LIBRARY_PATH (though
those standards don't know/care what happens after userspace takes
over control of the environment concept, they just talk about how the
world is created when you exec a process, so they AFAICS they don't
address this clobbering stuff, and AFAIK other LD_XXX stuff is
probably implementation specific).
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