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Re: lib/52386: pthread(3) doesn't respect PTHREAD_DESTRUCTOR_ITERATIONS



On 09.07.2017 22:20, Christos Zoulas wrote:
> On Jul 9,  5:20pm, joerg%bec.de@localhost (Joerg Sonnenberger) wrote:
> -- Subject: Re: lib/52386: pthread(3) doesn't respect PTHREAD_DESTRUCTOR_ITER
> 
> |  On Sun, Jul 09, 2017 at 03:30:00PM +0000, n54%gmx.com@localhost wrote:
> |  > PTHREAD_DESTRUCTOR_ITERATIONS is not respected as the maximum number of destructor iterations.
> |  
> |  The test case is incorrect. PTHREAD_DESTRUCTOR_ITERATIONS specifies a
> |  lower limit on the number of iterations performed. It is explicitly not
> |  a hard limit. To quote POSIX:
> |  
> |  Calling pthread_setspecific() from a thread-specific data destructor
> |  routine may result either in lost storage (after at least
> |  PTHREAD_DESTRUCTOR_ITERATIONS attempts at destruction) or in an infinite
> |  loop.
> 
> I agree, but making the code using the iteration constant we advertise
> is simple enough.
> 
> christos
> 

Before digging into POSIX, the attached test passes on FreeBSD, OpenBSD,
Linux, Android, Darwin. Only NetBSD is distinct.

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