File: overflow-computing-ambiguity.rs

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rustc 1.85.0%2Bdfsg3-1
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trait Hello {}

struct Foo<'a, T: ?Sized>(&'a T);

impl<'a, T: ?Sized> Hello for Foo<'a, &'a T> where Foo<'a, T>: Hello {}

impl Hello for Foo<'static, i32> {}

fn hello<T: ?Sized + Hello>() {}

fn main() {
    hello();
    //~^ ERROR type annotations needed
}