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From: Florian Weimer <>
To: Leo Liang <>
Cc: <>,,,
Subject: Re: Is it reasonable to expect errno to be 0 when entering main?
Date: Tue, 27 Sep 2022 08:05:20 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <YzGWAjzz2OhxKTGL@ubuntu01> (Leo Liang's message of "Mon, 26 Sep 2022 12:07:30 +0000")

* Leo Liang:

> If the above program is statically-linked, and if the program is executed before "crng init done",
> the errno will not be zero when entering main.
> There seems to be syscall (__getrandom) before main is entered,
> and if the crng is not initialized, the syscall will fail causing the errno to be set.
> (_dl_get_origin -> __libc_malloc -> ptmalloc_init -> tcache_key_initialize -> __getrandom)
> So we are wondering if we should set errno to zero before entering main.

This is a bug.  It only affects static linking.  Would you please file
it in Bugzilla?  Thanks.

  reply	other threads:[~2022-09-27  6:05 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-26 12:07 Leo Liang
2022-09-27  6:05 ` Florian Weimer [this message]
2022-09-27  7:15   ` Leo Liang
2022-09-27  7:31     ` Florian Weimer

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