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// build-pass (FIXME(62277): could be check-pass?)
#![allow(warnings)]
type Different<'a, 'b> = &'a mut (&'a (), &'b ());
type Same<'a> = Different<'a, 'a>;
fn with_closure_expecting_different<F>(_: F)
where F: for<'a, 'b> FnOnce(Different<'a, 'b>)
{
}
fn with_closure_expecting_different_anon<F>(_: F)
where F: FnOnce(Different<'_, '_>)
{
}
fn supplying_nothing_expecting_anon() {
with_closure_expecting_different_anon(|x: Different| {
})
}
fn supplying_nothing_expecting_named() {
with_closure_expecting_different(|x: Different| {
})
}
fn supplying_underscore_expecting_anon() {
with_closure_expecting_different_anon(|x: Different<'_, '_>| {
})
}
fn supplying_underscore_expecting_named() {
with_closure_expecting_different(|x: Different<'_, '_>| {
})
}
fn main() { }
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