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, 49 insertions, 0 deletions

diff --git a/src/test/ui/rfc-2497-if-let-chains/then-else-blocks.rs b/src/test/ui/rfc-2497-if-let-chains/then-else-blocks.rs
new file mode 100644
index 000000000..e061174f6
--- /dev/null
+++ b/src/test/ui/rfc-2497-if-let-chains/then-else-blocks.rs
@@ -0,0 +1,49 @@
+// run-pass
+
+#![feature(if_let_guard, let_chains)]
+
+fn check_if_let(opt: Option<Option<Option<i32>>>, value: i32) -> bool {
+    if let Some(first) = opt
+        && let Some(second) = first
+        && let Some(third) = second
+        && third == value
+    {
+        true
+    }
+    else {
+        false
+    }
+}
+
+fn check_let_guard(opt: Option<Option<Option<i32>>>, value: i32) -> bool {
+    match opt {
+        Some(first) if let Some(second) = first && let Some(third) = second && third == value => {
+            true
+        }
+        _ => {
+            false
+        }
+    }
+}
+
+fn check_while_let(opt: Option<Option<Option<i32>>>, value: i32) -> bool {
+    while let Some(first) = opt
+        && let Some(second) = first
+        && let Some(third) = second
+        && third == value
+    {
+        return true;
+    }
+    false
+}
+
+fn main() {
+    assert_eq!(check_if_let(Some(Some(Some(1))), 1), true);
+    assert_eq!(check_if_let(Some(Some(Some(1))), 9), false);
+
+    assert_eq!(check_let_guard(Some(Some(Some(1))), 1), true);
+    assert_eq!(check_let_guard(Some(Some(Some(1))), 9), false);
+
+    assert_eq!(check_while_let(Some(Some(Some(1))), 1), true);
+    assert_eq!(check_while_let(Some(Some(Some(1))), 9), false);
+}