Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 123 insertions, 0 deletions

diff --git a/tests/ui/associated-type-bounds/enum-bounds.rs b/tests/ui/associated-type-bounds/enum-bounds.rs
new file mode 100644
index 000000000..193f2efe1
--- /dev/null
+++ b/tests/ui/associated-type-bounds/enum-bounds.rs
@@ -0,0 +1,123 @@
+// run-pass
+
+#![feature(associated_type_bounds)]
+#![allow(dead_code)]
+
+trait Tr1 { type As1; }
+trait Tr2 { type As2; }
+trait Tr3 { type As3; }
+trait Tr4<'a> { type As4; }
+trait Tr5 { type As5; }
+
+impl Tr1 for &str { type As1 = bool; }
+impl Tr2 for bool { type As2 = u8; }
+impl Tr3 for u8 { type As3 = fn() -> u8; }
+impl Tr1 for () { type As1 = (usize,); }
+impl<'a> Tr4<'a> for (usize,) { type As4 = u8; }
+impl Tr5 for bool { type As5 = u16; }
+
+enum En1<T: Tr1<As1: Tr2>> {
+    Outest(T),
+    Outer(T::As1),
+    Inner(<T::As1 as Tr2>::As2),
+}
+
+fn wrap_en1_1<T>(x: T) -> En1<T> where T: Tr1, T::As1: Tr2 {
+    En1::Outest(x)
+}
+
+fn wrap_en1_2<T>(x: T::As1) -> En1<T> where T: Tr1, T::As1: Tr2 {
+    En1::Outer(x)
+}
+
+fn wrap_en1_3<T>(x: <T::As1 as Tr2>::As2) -> En1<T> where T: Tr1, T::As1: Tr2 {
+    En1::Inner(x)
+}
+
+enum En2<T: Tr1<As1: Tr2<As2: Tr3>>> {
+    V0(T),
+    V1(T::As1),
+    V2(<T::As1 as Tr2>::As2),
+    V3(<<T::As1 as Tr2>::As2 as Tr3>::As3),
+}
+
+enum En3<T: Tr1<As1: 'static>> {
+    V0(T),
+    V1(&'static T::As1),
+}
+
+enum En4<'x1, 'x2, T: Tr1<As1: for<'l> Tr4<'l>>> {
+    V0(&'x1 <T::As1 as Tr4<'x1>>::As4),
+    V1(&'x2 <T::As1 as Tr4<'x2>>::As4),
+}
+
+enum _En5<'x1, 'x2, T: Tr1<As1: for<'l> Tr4<'l, As4: Copy>>> {
+    _V0(&'x1 <T::As1 as Tr4<'x1>>::As4),
+    _V1(&'x2 <T::As1 as Tr4<'x2>>::As4),
+}
+
+enum En6<T>
+where
+    T: Tr1<As1: Tr2 + 'static + Tr5>,
+{
+    V0(T),
+    V1(<T::As1 as Tr2>::As2),
+    V2(&'static T::As1),
+    V3(<T::As1 as Tr5>::As5),
+}
+
+enum _En7<'a, 'b, T> // `<T::As1 as Tr2>::As2: 'a` is implied.
+where
+    T: Tr1<As1: Tr2>,
+{
+    V0(&'a T),
+    V1(&'b <T::As1 as Tr2>::As2),
+}
+
+fn _make_en7<'a, 'b, T>(x: _En7<'a, 'b, T>)
+where
+    T: Tr1<As1: Tr2>,
+{
+    match x {
+        _En7::V0(x) => {
+            let _: &'a T = &x;
+        },
+        _En7::V1(_) => {},
+    }
+}
+
+enum EnSelf<T> where Self: Tr1<As1: Tr2> {
+    V0(T),
+    V1(<Self as Tr1>::As1),
+    V2(<<Self as Tr1>::As1 as Tr2>::As2),
+}
+
+impl Tr1 for EnSelf<&'static str> { type As1 = bool; }
+
+fn main() {
+    if let En1::Outest("foo") = wrap_en1_1::<_>("foo") {} else { panic!() };
+    if let En1::Outer(true) = wrap_en1_2::<&str>(true) {} else { panic!() };
+    if let En1::Inner(24u8) = wrap_en1_3::<&str>(24u8) {} else { panic!() };
+
+    let _ = En2::<_>::V0("151571");
+    let _ = En2::<&str>::V1(false);
+    let _ = En2::<&str>::V2(42u8);
+    let _ = En2::<&str>::V3(|| 12u8);
+
+    let _ = En3::<_>::V0("deadbeef");
+    let _ = En3::<&str>::V1(&true);
+
+    let f1 = (1,);
+    let f2 = (2,);
+    let _ = En4::<()>::V0(&f1.0);
+    let _ = En4::<()>::V1(&f2.0);
+
+    let _ = En6::<_>::V0("bar");
+    let _ = En6::<&str>::V1(24u8);
+    let _ = En6::<&str>::V2(&false);
+    let _ = En6::<&str>::V3(12u16);
+
+    let _ = EnSelf::<_>::V0("foo");
+    let _ = EnSelf::<&'static str>::V1(true);
+    let _ = EnSelf::<&'static str>::V2(24u8);
+}