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To: cygwin AT cygwin DOT com
Subject: Bug in pthread_equal
Message-ID: <996153772.3b6019acb988c@webmail3.ision.nl>
Date: Thu, 26 Jul 2001 15:22:52 +0200 (CEST)
From: Pieter de Visser <pieterdv AT knoware DOT nl>
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There seems to be a bug in pthread_equal:

    int pthread_equal(pthread_t t1, pthread_t t2)

should return a non-zero value if t1 and t2 refer to the same thread, and a 
zero value otherwise. With the Cygwin DLL 1.3.2 implementation, it is the other 
way around: the function returns zero if t1 and t2 refer to the same thread, 
and a non-zero value otherwise.

One way to solve this would be to change
cygwin-1.3.2-1/winsup/cygwin/thread.cc, at line 1811: replace 

int
__pthread_equal (pthread_t * t1, pthread_t * t2)
{
  return (*t1 - *t2);
}

with

int
__pthread_equal (pthread_t * t1, pthread_t * t2)
{
  return (*t1 == *t2);
}

(I did not test this, though.)

Pieter

P.S. Please cc: any replies to me as I don't read this mailing list.

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