Finalizer not run on tuple-like structs

[brson]

Leaks.

use core::cast::transmute;
use core::libc::c_void;

struct NonCopyable(*c_void);

impl NonCopyable: Drop {
    fn finalize(&self) {
        let p = **self;
        let v = unsafe { transmute::<*c_void, ~int>(p) };
    }
}

fn main() {
    let t = ~0;
    let p = unsafe { transmute::<~int, *c_void>(t) };
    let z = NonCopyable(p);
}

[graydon]

this got worse; it now ICEs with an 'assertion failed: adt::is_newtypeish(repr)'

[graydon]

non-critical for 0.6, de-milestoning

[catamorphism]

Works now; I'll check in the test case.

[catamorphism]

Test case checked in in 9a06ff0. Closing