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Re: bison-2.6.5 released [stable]

From: Hans Aberg
Subject: Re: bison-2.6.5 released [stable]
Date: Thu, 8 Nov 2012 15:13:20 +0100

On 8 Nov 2012, at 10:23, Akim Demaille wrote:

> Le 8 nov. 2012 à 10:12, Hans Aberg a écrit :
>>> fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
>>>         file_name, line_number);
>> It is a dynamic check which cannot be verified statically, so the clang 
>> warning is perhaps inappropriate as default.
> No, it's really static: it can perfectly see what both possible formats are, 
> so it may, indeed, warn that in one of the cases the arguments are not used.  
> I would bet that this warning would be addressed if GCC made similar 
> warnings.  But in the current state of affairs, I don't feel like lobbying to 
> get patches applied in this piece of code.

Since it is legal C, there should be no default diagnostics, only if there has 
been a flag set, which probably GCC can do.

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