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List:       gnulib-bug
Subject:    Re: -Wunused
From:       Simon Josefsson <simon () josefsson ! org>
Date:       2008-11-18 12:40:07
Message-ID: 87wsf1yzq0.fsf () mocca ! josefsson ! org
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Bruno Haible <bruno@clisp.org> writes:

>> Regarding -Wunused, I was unsure whether it needs to be added.  The GCC
>> 4.3.2 manual appears contradicting on whether -Wunused is implied by
>> -Wall or not
>
> -Wunused-parameter is implied by the *combination* of -Wall and -W, or of
> -Wunused and -W.

My confusion stem from this remark:

`-Wunused'
     All the above `-Wunused' options combined.

     In order to get a warning about an unused function parameter, you
     must either specify `-Wextra -Wunused' (note that `-Wall' implies
     `-Wunused'), or separately specify `-Wunused-parameter'.

/Simon



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