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// Check that repeated type variables are correctly handled
#![allow(unused)]
#![feature(type_ascription)]
type PairUncoupled<'a, 'b, T> = (&'a T, &'b T);
type PairCoupledTypes<T> = (T, T);
type PairCoupledRegions<'a, T> = (&'a T, &'a T);
fn uncoupled_wilds_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = type_ascribe!(((s, _x),), (PairUncoupled<_>,));
y // OK
}
fn coupled_wilds_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = type_ascribe!(((s, _x),), (PairCoupledTypes<_>,));
y //~ ERROR lifetime may not live long enough
}
fn coupled_regions_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = type_ascribe!(((s, _x),), (PairCoupledRegions<_>,));
y //~ ERROR lifetime may not live long enough
}
fn cast_uncoupled_wilds_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = ((s, _x),) as (PairUncoupled<_>,);
y // OK
}
fn cast_coupled_wilds_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = ((s, _x),) as (PairCoupledTypes<_>,);
y //~ ERROR lifetime may not live long enough
}
fn cast_coupled_regions_rhs<'a>(_x: &'a u32, s: &'static u32) -> &'static u32 {
let ((y, _z),) = ((s, _x),) as (PairCoupledRegions<_>,);
y //~ ERROR lifetime may not live long enough
}
fn main() {}
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