Proposed patch replaces PyMem_Malloc with PyMem_New if the former is used in the form PyMem_Malloc(len * sizeof(type)). This can fix possible overflow errors and makes the code cleaner.
In _testbuffer.c: ndim <= 64, so the changes aren't really necessary. Somehow this fact needs to get widely known, since it does not make sense to check for overflow anytime ndim is used. The reason is of course that even an array with only 2 elements per dimension gets quite large with ndim=64. :)
> In _testbuffer.c: ndim <= 64, so the changes aren't really necessary. Indeed, I'll remove these changes. > The reason is of course that even an array with only 2 elements per dimension gets quite large with ndim=64. :) But an array can be with 1 element per dimension. In any case it is good that there is strict limitation on ndim values.
