LLVM lint error with glue_drop

[Aatch]

From implementing #6778, LLVM's linter spits out this a lot:

Undefined behavior: Call argument type mismatches callee parameter type
  %25 = call {} bitcast ({} ({}*, {}*, %tydesc**, { i64, %tydesc*, i8*, i8*, i32 } addrspace(1)**)* @_ZN9_ubox_u3217_b6378abf1e661b9814glue_drop_2923E to {} ({}*, {}*, %tydesc**, { i64, %tydesc*, i8*, i8*, i64 } addrspace(1)**)*)({}* null, {}* null, %tydesc** null, { i64, %tydesc*, i8*, i8*, i64 } addrspace(1)** %3)

This comes from this code:

pub fn test() -> ~uint {
    let a = ~1;
    let b = ~2;
    ~(*a + *b)
}

[Aatch]

part of #6819

[Aatch]

This has been somewhat fixed by a recent change, the above example doesn't complain about the drop glue. It does, however, complain about the cast::transmute calls.

[thestinger]

This specific issue is fixed now.