Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/ui/const-generics/generic_const_exprs/infer-too-generic.rs b/tests/ui/const-generics/generic_const_exprs/infer-too-generic.rs
new file mode 100644
index 000000000..b8058c252
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/infer-too-generic.rs
@@ -0,0 +1,24 @@
+// run-pass
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+use std::{mem, ptr};
+
+fn split_first<T, const N: usize>(arr: [T; N]) -> (T, [T; N - 1])
+where
+    [T; N - 1]: Sized,
+{
+    let arr = mem::ManuallyDrop::new(arr);
+    unsafe {
+        let head = ptr::read(&arr[0]);
+        let tail = ptr::read(&arr[1..] as *const [T] as *const [T; N - 1]);
+        (head, tail)
+    }
+}
+
+fn main() {
+    let arr = [0, 1, 2, 3, 4];
+    let (head, tail) = split_first(arr);
+    assert_eq!(head, 0);
+    assert_eq!(tail, [1, 2, 3, 4]);
+}