From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/unsafe/union_destructure.rs | 51 +++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/test/ui/unsafe/union_destructure.rs

(limited to 'src/test/ui/unsafe/union_destructure.rs')

diff --git a/src/test/ui/unsafe/union_destructure.rs b/src/test/ui/unsafe/union_destructure.rs
new file mode 100644
index 000000000..6c88344b5
--- /dev/null
+++ b/src/test/ui/unsafe/union_destructure.rs
@@ -0,0 +1,51 @@
+// run-pass
+// revisions: mir thir
+// [thir]compile-flags: -Z thir-unsafeck
+
+#[derive(Copy, Clone)]
+#[allow(dead_code)]
+struct Pie {
+    slices: u8,
+    size: u8,
+}
+
+union Foo {
+    #[allow(dead_code)]
+    bar: i8,
+    baz: Pie
+}
+
+fn main() {
+    let u = Foo { bar: 5 };
+    let (Some(Foo { bar: _ }) | None) = Some(u);
+    let u = Foo { bar: 6 };
+    let (Some(Foo { bar: _ }) | Some(Foo { bar: _ }) | None) = Some(u);
+    unsafe {
+        let u = Foo { bar: 7 };
+        let (Foo { bar } | Foo { bar }) = u;
+        assert_eq!(bar, 7)
+    }
+    let u = Foo { bar: 8 };
+    match Some(u) {
+        Some(Foo { bar: _ }) => 3,
+        None => 4,
+    };
+
+    let u = Foo { bar: 9 };
+    unsafe { //[mir]~ WARNING unnecessary `unsafe` block
+        match u {
+            Foo { baz: Pie { .. } } => {},
+        };
+    }
+    let u = Foo { bar: 10 };
+    unsafe { //[mir]~ WARNING unnecessary `unsafe` block
+        match u {
+            Foo { baz: Pie { slices: _, size: _ } } => {},
+        };
+    }
+
+    let u = Foo { bar: 11 };
+    match u {
+        Foo { baz: _ } => {},
+    };
+}
-- 
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