microseh 1.1.2

Structured Exception Handling (SEH) for Rust
Documentation 
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const INVALID_PTR: *mut i32 = core::mem::align_of::<i32>() as _;

struct Resource {
    data: i32,
}

impl Resource {
    fn new() -> Self {
        Self { data: 1337 }
    }
}

impl Drop for Resource {
    fn drop(&mut self) {
        println!("resource dropped");
    }
}

fn main() {
    let ex = microseh::try_seh(|| unsafe {
        let res = Resource::new();
        println!("data: {}", res.data);
        INVALID_PTR.read_volatile();
    });

    // U.B. if an exception is thrown, the resource will not be dropped!
    // You could choose to move the resource out of the closure like so:
    // let res = Resource::new();
    // let ex = microseh::try_seh(|| unsafe {
    //     println!("data: {}", res.data);
    //     INVALID_PTR.read_volatile();
    // });

    if let Err(ex) = ex {
        println!("{:?}: {}", ex.address(), ex);
    }
}