File: issue-38412.rs

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rustc 1.85.0%2Bdfsg3-1
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fn main() {
    let Box(a) = loop { };
    //~^ ERROR cannot match against a tuple struct which contains private fields

    // (The below is a trick to allow compiler to infer a type for
    // variable `a` without attempting to ascribe a type to the
    // pattern or otherwise attempting to name the Box type, which
    // would run afoul of issue #22207)
    let _b: *mut i32 = *a;
}