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Date: Tue, 10 Mar 2020 11:47:54 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: musl and jemalloc support
On Tue, Mar 10, 2020 at 03:04:48PM +0100, Kaisrlík, Jan wrote:
> On Tue, Mar 10, 2020 at 2:41 PM Rich Felker <dalias@...c.org> wrote:
> >
> > On Tue, Mar 10, 2020 at 12:08:57PM +0100, Kaisrlík, Jan wrote:
> > > > the fact that you have libpthread.so means it's not a musl system
> > > > and preloading a libpthread.so from another libc is expected to
> > > > crash. (even on other systems you should not just preload libpthread,
> > > > but libjemalloc should have it in its dependencies if needed.)
> > > >
> > >
> > > Sorry, I kept libpthread from one of my previous tests which is slightly
> > > misleading in this case. My system has only one libpthread library coming
> > > from musl.
> >
> > musl has no libpthread.so, only libpthread.a (which is empty). If you
> > have a libpthread.so, something probably went badly wrong in setting
> > up your system.
>
> Thank you for pointing this. Fortunately, it is symlink to libc.
>
> ls -la usr/lib/libpthread.so
> lrwxrwxrwx 1 X X 7 Mar 5 15:02 usr/lib/libpthread.so -> libc.so
That's still wrong. Recent musl will go out of its way to prevent you
from shooting yourself in the foot like that, but older musl will blow
up horribly. In either case the file should not exist.
Rich
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