[PATCH] msvcrt/tests: Add tests for mbstowcs and wcstombs with a negative count.

[Piotr Caban]

On 06/14/16 06:18, Alex Henrie wrote:
> I just ran some more tests, and it turns out that the behavior of
> Vista and later is even weirder than I thought. On these systems,
> mbstowcs with a negative count writes one null byte to the output
> string before returning -1, but wcstombs returns -1 without writing
> anything.
>
> I think I'd rather have the Windows XP / standard C behavior than the
> inconsistent, nonconformant Vista behavior.

I've moved your tests to msvcr90. The behavior is consistent there on 
all windows versions. I think it makes the tests easier to read. I've 
also changed the implementation so all tests are passing.

Thank you,
Piotr