File: type_length_limit.rs

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//@ build-fail
//@ compile-flags: -Copt-level=0 -Zenforce-type-length-limit
//~^^ ERROR reached the type-length limit

// The regex below normalizes the long type file name to make it suitable for compare-modes.
//@ normalize-stderr: "'\$TEST_BUILD_DIR/.*\.long-type.txt'" -> "'$$TEST_BUILD_DIR/$$FILE.long-type.txt'"

// Test that the type length limit can be changed.
// The exact type depends on optimizations, so disable them.

#![allow(dead_code)]
#![type_length_limit="8"]

macro_rules! link {
    ($id:ident, $t:ty) => {
        pub type $id = ($t, $t, $t);
    }
}

link! { A1, B1 }
link! { B1, C1 }
link! { C1, D1 }
link! { D1, E1 }
link! { E1, A }
link! { A, B }
link! { B, C }
link! { C, D }
link! { D, E }
link! { E, F }
link! { F, G<Option<i32>, Option<i32>> }

pub struct G<T, K>(std::marker::PhantomData::<(T, K)>);

fn main() {
    drop::<Option<A>>(None);
    //~^ ERROR reached the type-length limit
}