Failed to sort range

[Sergei Nosov]

Hi!

I'm trying to implement an array, which uses malloc to allocate 
memory. Also, I want to implement a random access range interface 
for it.

That went pretty well, until I tried to sort it. Sorting function 
asserted "Failed to sort range of type Array!(int)."

I've spent quite some time trying to figure out what's going on 
with no success.

The implementation can be found at:
https://gist.github.com/snosov1/5662471

I used
DMD64 D Compiler v2.062 and
LDC - the LLVM D compiler (trunk): based on DMD v2.062 and LLVM 
3.2svn
on Ubuntu. Phobos version was the one that came with the dmd 
compiler.

Does anyone have any ideas what's wrong with the code I've 
provided?