[libcxx] r181569 - Fix incorrect type usage; nice catch by Sebastian

[Sebastian Redl]

On 2013-05-10 02:31, Chandler Carruth wrote:
> On Fri, May 10, 2013 at 2:16 AM, Marshall Clow <mclow at qualcomm.com 
> <mailto:mclow at qualcomm.com>> wrote:
>
>     Author: marshall
>     Date: Thu May  9 19:16:10 2013
>     New Revision: 181569
>
>     URL: http://llvm.org/viewvc/llvm-project?rev=181569&view=rev
>     Log:
>     Fix incorrect type usage; nice catch by Sebastian
>
>
> Test case please?
>
Hm, something like this?

template <typename I>
struct counting_iterator {
   typedef I value_type;
   typedef I distance_type;

   // other iterator stuff
};

assert(!std::equal(counting_iterator<char>(0x00), 
counting_iterator<char>(0x04),
     counting_iterator<int>(0x00), counting_iterator<int>(0x104));

That would assign the second distance to a char, which should wrap 
around to make the sequences appear the same.

Sebastian
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