Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 35 insertions, 0 deletions

diff --git a/src/test/ui/variance/variance-trait-bounds.rs b/src/test/ui/variance/variance-trait-bounds.rs
new file mode 100644
index 000000000..ad5334602
--- /dev/null
+++ b/src/test/ui/variance/variance-trait-bounds.rs
@@ -0,0 +1,35 @@
+#![allow(dead_code)]
+#![feature(rustc_attrs)]
+
+// Check that bounds on type parameters (other than `Self`) do not
+// influence variance.
+
+trait Getter<T> {
+    fn get(&self) -> T;
+}
+
+trait Setter<T> {
+    fn get(&self, _: T);
+}
+
+#[rustc_variance]
+struct TestStruct<U,T:Setter<U>> { //~ ERROR [+, +]
+    t: T, u: U
+}
+
+#[rustc_variance]
+enum TestEnum<U,T:Setter<U>> { //~ ERROR [*, +]
+    Foo(T)
+}
+
+#[rustc_variance]
+struct TestContraStruct<U,T:Setter<U>> { //~ ERROR [*, +]
+    t: T
+}
+
+#[rustc_variance]
+struct TestBox<U,T:Getter<U>+Setter<U>> { //~ ERROR [*, +]
+    t: T
+}
+
+pub fn main() { }