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[rustc.git] / src / test / ui / variance / variance-use-invariant-struct-1.rs

// Test various uses of structs with distinct variances to make sure
// they permit lifetimes to be approximated as expected.

struct SomeStruct<T>(*mut T);

fn foo<'min,'max>(v: SomeStruct<&'max ()>)
                  -> SomeStruct<&'min ()>
    where 'max : 'min
{
    v
    //~^ ERROR lifetime may not live long enough
}

fn bar<'min,'max>(v: SomeStruct<&'min ()>)
                  -> SomeStruct<&'max ()>
    where 'max : 'min
{
    v
    //~^ ERROR lifetime may not live long enough
}


fn main() { }