--- Comment #2 from hailijuan at gmail dot com 2009-06-17 10:07 ---
Subject: Re: __sync_fetch_and_add seems not working well for
-march=i686
Yes, I have seen the difference. Thanks muchly. I will close it.
2009/6/17 jakub at gcc dot gnu dot org :
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> --- Comment #1 from
--- Comment #1 from jakub at gcc dot gnu dot org 2009-06-17 08:04 ---
That's undefined behavior, there is no sequence point between the the
evaluation of foo (&n, n) and evaluation of n passed as the next argument.
If foo (&n, n) is evaluated first, you will see 1 2 printed, if n is eval
