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From: jammy.linux@gmail.com (Zhang Meng)
To: kernelnewbies@lists.kernelnewbies.org
Subject: BUILD_BUG_ON_ZERO
Date: Fri, 25 Feb 2011 18:50:35 +0800	[thread overview]
Message-ID: <AANLkTim3kugPOv9F4z5=G3x2P05HChgT2tK_KFsumPPf@mail.gmail.com> (raw)

Hi ~List,

Could anybody explain the macro below? what does it mean?

Thanks in advance.

#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))


-- 
Yours sincerely
ZhangMeng

             reply	other threads:[~2011-02-25 10:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-25 10:50 Zhang Meng [this message]
2011-02-25 16:33 ` BUILD_BUG_ON_ZERO Dave Hylands
2011-02-26  1:14   ` BUILD_BUG_ON_ZERO Meng Zhang

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