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

[Bartosz Brachaczek <b.brachaczek@gmail.com>]

On 7/10/2017 4:44 PM, Jens Gustedt wrote:
> 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

Nice, thanks. Looks this one has already been reported here:

http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2033.htm

I can't find what's the status of that document, though.