linux-kernel - Re: [PATCH 3/5]acpi:glue.c Fix warning: variable 'ret' set but not used

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Date:	Fri, 02 Jul 2010 01:10:45 +0100
From:	David Howells <dhowells@...hat.com>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, lenb@...nel.org
Subject: Re: [PATCH 3/5]acpi:glue.c Fix warning: variable 'ret' set but not used

Justin P. Mattock <justinmattock@...il.com> wrote:

> a bit confused with the whole:  "?:" though
> *condition ? value if true : value if false* (what if both are true
> what if both are false or does it matter?)

If you say:

	cond ?: false_value

then you'll get cond if cond is non-zero and false_value if it isn't.

I suspect it's a gccism.

David
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