LLVM error, broken module on using newtype with a closure

[yann-ledu]

fn main()
{
    struct Fun<F>(F);
    let f = Fun(|x| 3*x);
    let Fun(g) = f;
    println!("{:?}",g(4)); 
}

[frewsxcv]

I can confirm this is still an issue with the latest 1.0 beta:

~/Downloads $ rustc test.rs
Global is external, but doesn't have external or weak linkage!
i32 (%closure*, i32)* @_ZN4main12closure.1060E
invalid linkage type for function declaration
i32 (%closure*, i32)* @_ZN4main12closure.1060E
LLVM ERROR: Broken module found, compilation aborted!

~/Downloads $ rustc --version
rustc 1.0.0-beta.2 (e9080ec39 2015-04-16) (built 2015-04-16)

[fjolliton]

I get the same error with both stable and nightly with:

fn main() {
    let f = || || 0;
    std::thread::spawn(f());
}

$ rustc --version
rustc 1.0.0 (a59de37e9 2015-05-13) (built 2015-05-14)
$ rustc --version
rustc 1.2.0-nightly (613e57b44 2015-06-01) (built 2015-06-02)

[mitaa]

These examples compile on Playpen Nightly.

[frewsxcv]

I'll go ahead and add regression tests for this