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Date: Mon, 01 Sep 2008 13:53:23 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Kostik Belousov <kostikbel@gmail.com>
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Cc: Daniel Eischen <deischen@freebsd.org>, David Xu <davidxu@freebsd.org>,
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Subject: Re: mysterious hang in pthread_create
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on 01/09/2008 11:45 Kostik Belousov said the following:
> On Mon, Sep 01, 2008 at 11:34:45AM +0300, Andriy Gapon wrote:
>> on 01/09/2008 11:10 David Xu said the following:
>>> The ancient bug is in rtld, rlock_acquire() and wlock_acquire() test
>>> thread_flag as a boolean value, because pt_iterate_phdr() tries to
>>> lock two locks at same time, this test will always fail once it
>>> acquired first lock.
>>>
>>> The following silly patch fixes the problem Andriy encountered:
>> I can confirm - this fixed the issue for me.
>> David, thanks!
> 
> Does libc_r still work with patch applied ?

In what sense?
The test program that I posted seems to hang in both cases (patched and 
unpatched rtld).

-- 
Andriy Gapon