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Date:      Sat, 02 Jan 2021 04:27:56 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 252307] dlopen (without RTLD_GLOBAL) overrides weak symbols in libc
Message-ID:  <bug-252307-227-sSQKxQ2zWD@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-252307-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-252307-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252307

--- Comment #3 from Konstantin Belousov <kib@FreeBSD.org> ---
You need to LD_PRELOAD your interposer, I noted it in my comment #1.
solo% LD_PRELOAD=3D./override.so ./test
override

In your example, dlopened object would be added at the end of the global li=
st
and in fact its symbols are interposed by the objects loaded at startup, i.=
e.
the effect is reverse. (And your example misses RTLD_GLOBAL, but does not
matter
much).

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