LLVM assert with boxed classes and destructors

[brson]

type cairo_scaled_font_t = uint;

class Font/& {
    let fontbuf: [u8];
    let cairo_font: *cairo_scaled_font_t;
    let font_dtor: fn@();

    new(-fontbuf: [u8]) {

        self.fontbuf <- fontbuf;
        self.cairo_font = ptr::null();
        self.font_dtor = fn@() { };
    }

    drop {
        self.font_dtor();
    }
}

class FontLibrary {
    let bogus: int;

    new() { self.bogus = 0; }

    fn get_font() -> @Font {
        let f = Font([]);
        ret @f;
    }
}

fn main() { }

rustc: /home/banderson/Dev/rust2/src/llvm/include/llvm/Instructions.h:703: llvm::Type* llvm::checkGEPType(llvm::Type*): Assertion `Ty && "Invalid GetElementPtrInst indices for type!"' failed.

[brson]

Reduced:

class Font {
    let fontbuf: uint;
    let cairo_font: uint;
    let font_dtor: uint;

    new() {
        self.fontbuf = 0;
        self.cairo_font = 0;
        self.font_dtor = 0;
    }

    drop { }
}

fn main() {
    let _f = @Font();
}

Adding fields doesn't fix the problem. Reducing fields does.

[catamorphism]

This is fixed, just waiting for a snapshot.

[brson]

Nice! Thanks, tjc.