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Date: Mon, 23 Nov 2020 17:59:16 +0100
From: Florian Weimer <fw@...eb.enyo.de>
To: Jonathan Wakely <jwakely@...hat.com>
Cc: Rich Felker <dalias@...c.org>, Арсений
<a@...r0n.science>, musl@...ts.openwall.com
Subject: Re: Mutexes are not unlocking
* Jonathan Wakely:
> Or users might be able to solve it for themselves by creating a tiny
> shared library that contains nothing but a symbol called
> __pthread_key_create and LD_PRELOADing that, so that the checks in the
> binaryware looking for that symbol become true.
Typically, that doesn't work for main programs because the link editor
will resolve weak unexported symbols to zero. There might not be a
dynamic symbol entry for __pthread_key_create in this case. Shared
objects are different in this regard.
I think interoperability for these mismatches has to come directly
from the mutex implementation.
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