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Date: Sat, 15 Aug 2020 00:02:01 +0200
From: Florian Weimer <>
To: Rich Felker <>
Subject: Re: Restrictions on child context after multithreaded fork

* Rich Felker:

> In case we do want to follow a direction of trying to provide some
> degree of relaxation of restrictions on the child (taking the liberty
> of POSIX-future drop of fork's AS-safety requirement), I did a quick
> survey of libc-internal locks, and found:

pthread_once is another source of problems, although there seem to be
few users in musl.

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