Promote -Wno-sizeof-array-argument to an error

[Alejandro Colomar]

On Thu, Aug 08, 2024 at 09:31:37AM GMT, Martin Uecker wrote:
> Am Donnerstag, dem 08.08.2024 um 02:36 +0200 schrieb Alejandro Colomar:
> > Hi Martin,
> > 
> > Can we promote -Wno-sizeof-array-argument to a hard error?  I don't
> > think there's any legitimate use sizeof() on such a parameter.
> 
> I am a bit worried that it might prevent people from adding size information
> to arguments, by transforming later use of sizeof on such a pointer argument
> into a hard error.
> 
> So I would not do this at this time, until we have fully evolved the
> size checking and the benefits are clear.

Hmmm, I see; makes sense.  Thanks!

Alex

> 
> > 
> > It would be an incompatible extension to ISO C, which would make sure
> > that there are no remaining uses of sizeof(array_param), which would
> > itself allow in the future --if n2906 or something similar is accepted--
> > repurposing sizeof() to return the size in bytes of the array (instead
> > of the size of a pointer) without worrying about breaking existing code.
> 
> I agree with this goal, but this is a long term goal.  
> 
> 
> Martin
> 
> > 
> 
> 
> 

-- 
<https://www.alejandro-colomar.es/>
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