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// compile-flags: -Z mir-opt-level=4
// build-pass
// This used to ICE in const-prop due
// to an empty ParamEnv being used during normalization
// of a generic type
fn main() {
join_all::<u32>();
}
trait Foo {
type Item;
}
impl Foo for u32 {
type Item = u8;
}
trait Bar {
type Item2;
}
impl Bar for u8 {
type Item2 = u64;
}
fn join_all<I>()
where I: Foo,
I::Item: Bar
{
Vec::<<I::Item as Bar>::Item2>::new(); // ICE occurs processing this line
}
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