possible codegen issue for ubyte params?

[Stefan Jonasson]

http://dpaste.dzfl.pl/77b60e32

I must start by apologizing for the bad test program, since it's 
not fully minimal and requires 2 external binary files in order 
to reproduce. But any files seems to suffice, my test files are 
8k and the needle-file is not contained in the haystack-file.

// object.Error: Access Violation
algorithm.d(3609):
for (auto i = needle.save; !i.empty && !binaryFun!pred(i.back, 
needleBack);

DMD32 D Compiler v2.063.2

// This works fine
bool binaryFun_i(uint  a, uint  b) { return a==b; }

// object.Error: Access Violation
bool binaryFun_b(ubyte a, ubyte b) { return a==b; }

Also if compiling with -inline, the problem disappears, this is 
what gave me the "wild codegen theory". Basically I'm wondering 
if this is this a known issue, or if my program invalid?