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, 28 insertions, 0 deletions

diff --git a/src/test/ui/empty/empty-never-array.stderr b/src/test/ui/empty/empty-never-array.stderr
new file mode 100644
index 000000000..909aa73a7
--- /dev/null
+++ b/src/test/ui/empty/empty-never-array.stderr
@@ -0,0 +1,28 @@
+error[E0005]: refutable pattern in local binding: `T(_, _)` not covered
+  --> $DIR/empty-never-array.rs:10:9
+   |
+LL |     let Helper::U(u) = Helper::T(t, []);
+   |         ^^^^^^^^^^^^ pattern `T(_, _)` not covered
+   |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
+note: `Helper<T, U>` defined here
+  --> $DIR/empty-never-array.rs:4:5
+   |
+LL | enum Helper<T, U> {
+   |      ------
+LL |     T(T, [!; 0]),
+   |     ^ not covered
+   = note: the matched value is of type `Helper<T, U>`
+help: you might want to use `if let` to ignore the variant that isn't matched
+   |
+LL |     let u = if let Helper::U(u) = Helper::T(t, []) { u } else { todo!() };
+   |     ++++++++++                                     ++++++++++++++++++++++
+help: alternatively, on nightly, you might want to use `#![feature(let_else)]` to handle the variant that isn't matched
+   |
+LL |     let Helper::U(u) = Helper::T(t, []) else { todo!() };
+   |                                         ++++++++++++++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0005`.