Passes in DMD compiler, but breaks in GDC during assert tests.
B4S1L3 suggested it might be an old compiler bug. I need confirmation if this is an old (not yet caught up) or a new one (to which I'll have to write or have a work-around until the bug is fixed).
// http://dpaste.com/0M7M8NK uint[] sub(uint[] lhs, const (uint)[] rhs) { long t; //temporary, doubles as carry foreach(i, ref v; lhs) { t += v; t -= rhs[i]; v = cast(uint) t; //reset carry t >>= uint.sizeof*8; } return lhs; } unittest { uint[3] lhs = [99, 201, 300], rhs = [-1, 0, 0]; assert(sub(lhs, rhs) == [100, 200, 300]); }
