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, 63 insertions, 0 deletions

diff --git a/src/test/ui/or-patterns/search-via-bindings.rs b/src/test/ui/or-patterns/search-via-bindings.rs
new file mode 100644
index 000000000..d98606ded
--- /dev/null
+++ b/src/test/ui/or-patterns/search-via-bindings.rs
@@ -0,0 +1,63 @@
+// Check that we expand multiple or-patterns from left to right.
+
+// run-pass
+
+fn search(target: (bool, bool, bool)) -> u32 {
+    let x = ((false, true), (false, true), (false, true));
+    let mut guard_count = 0;
+    match x {
+        ((a, _) | (_, a), (b @ _, _) | (_, b @ _), (c @ false, _) | (_, c @ true))
+            if {
+                guard_count += 1;
+                (a, b, c) == target
+            } =>
+        {
+            guard_count
+        }
+        _ => unreachable!(),
+    }
+}
+
+// Equivalent to the above code, but hopefully easier to understand.
+fn search_old_style(target: (bool, bool, bool)) -> u32 {
+    let x = ((false, true), (false, true), (false, true));
+    let mut guard_count = 0;
+    match x {
+        ((a, _), (b @ _, _), (c @ false, _))
+        | ((a, _), (b @ _, _), (_, c @ true))
+        | ((a, _), (_, b @ _), (c @ false, _))
+        | ((a, _), (_, b @ _), (_, c @ true))
+        | ((_, a), (b @ _, _), (c @ false, _))
+        | ((_, a), (b @ _, _), (_, c @ true))
+        | ((_, a), (_, b @ _), (c @ false, _))
+        | ((_, a), (_, b @ _), (_, c @ true))
+            if {
+                guard_count += 1;
+                (a, b, c) == target
+            } =>
+        {
+            guard_count
+        }
+        _ => unreachable!(),
+    }
+}
+
+fn main() {
+    assert_eq!(search((false, false, false)), 1);
+    assert_eq!(search((false, false, true)), 2);
+    assert_eq!(search((false, true, false)), 3);
+    assert_eq!(search((false, true, true)), 4);
+    assert_eq!(search((true, false, false)), 5);
+    assert_eq!(search((true, false, true)), 6);
+    assert_eq!(search((true, true, false)), 7);
+    assert_eq!(search((true, true, true)), 8);
+
+    assert_eq!(search_old_style((false, false, false)), 1);
+    assert_eq!(search_old_style((false, false, true)), 2);
+    assert_eq!(search_old_style((false, true, false)), 3);
+    assert_eq!(search_old_style((false, true, true)), 4);
+    assert_eq!(search_old_style((true, false, false)), 5);
+    assert_eq!(search_old_style((true, false, true)), 6);
+    assert_eq!(search_old_style((true, true, false)), 7);
+    assert_eq!(search_old_style((true, true, true)), 8);
+}