Re: [PATCH] handle whitespace before %% in scanf

[Jens Gustedt <jens.gustedt@inria.fr>]

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Hello Bartosz,

On Mon, 10 Jul 2017 10:22:37 +0200 Bartosz Brachaczek
<b.brachaczek@gmail.com> wrote:

> > EXAMPLE 5 The call:
> > 
> >     #include <stdio.h>
> >     /* ... */
> >     int n, i;
> >     n = sscanf("foo % bar 42", "foo%%bar%d", &i);
> > 
> > will assign to 'n' the value 1 and to 'i' the value 42 because input
> > white-space characters are skipped for both the '%' and 'd'
> > conversion specifiers.  
> 
> Now, the code in the example is clearly broken, as either the format 
> string should be "foo%% bar%d" or the input string should be
> "foo %bar 42", but the explanation does imply that '%%' consumes
> whitespace.

Yes, I have noted this as an editorial fix for C17

Thanks for reporting
Jens

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