Re: [PATCH] attribs: Improve diagnostics

[Richard Biener <rguenther@suse.de>]

On Fri, 23 Sep 2022, Jakub Jelinek wrote:

> Hi!
> 
> When looking at the attribs code, I've noticed weird diagnostics
> like
> int a __attribute__((section ("foo", "bar")));
> a.c:1:1: error: wrong number of arguments specified for ?section? attribute
>     1 | int a __attribute__((section ("foo", "bar")));
>       | ^~~
> a.c:1:1: note: expected between 1 and 1, found 2
> As roughly 50% of attributes that accept any arguments have
> spec->min_length == spec->max_length, I think it is worth it to have
> separate wording for such common case and just write simpler
> a.c:1:1: note: expected 1, found 2
> 
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

OK.

Thanks,
Richard.

> 2022-09-23  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* attribs.cc (decl_attributes): Improve diagnostics, instead of
> 	saying expected between 1 and 1, found 2 just say expected 1, found 2.
> 
> --- gcc/attribs.cc.jj	2022-09-22 10:54:44.693705319 +0200
> +++ gcc/attribs.cc	2022-09-22 18:18:38.142414100 +0200
> @@ -737,6 +737,9 @@ decl_attributes (tree *node, tree attrib
>  	      if (spec->max_length < 0)
>  		inform (input_location, "expected %i or more, found %i",
>  			spec->min_length, nargs);
> +	      else if (spec->min_length == spec->max_length)
> +		inform (input_location, "expected %i, found %i",
> +			spec->min_length, nargs);
>  	      else
>  		inform (input_location, "expected between %i and %i, found %i",
>  			spec->min_length, spec->max_length, nargs);
> 
> 
> 	Jakub
> 
> 

-- 
Richard Biener <rguenther@suse.de>
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