From 744f885e2a505136203e3e0eef51f72dbe78b511 Mon Sep 17 00:00:00 2001
From: Dániel Buga <bugadani@gmail.com>
Date: Sat, 9 Jan 2021 10:22:06 +0100
Subject: Remove unreachable panics from VecDeque

---
 src/test/codegen/vecdeque_no_panic.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/test/codegen/vecdeque_no_panic.rs

(limited to 'src/test/codegen')

diff --git a/src/test/codegen/vecdeque_no_panic.rs b/src/test/codegen/vecdeque_no_panic.rs
new file mode 100644
index 00000000000..cbf420bada9
--- /dev/null
+++ b/src/test/codegen/vecdeque_no_panic.rs
@@ -0,0 +1,19 @@
+// This test checks that `VecDeque::front[_mut]()` and `VecDeque::back[_mut]()` can't panic.
+
+// compile-flags: -O
+// ignore-debug: the debug assertions get in the way
+
+#![crate_type = "lib"]
+
+use std::collections::VecDeque;
+
+// CHECK-LABEL: @dont_panic
+#[no_mangle]
+pub fn dont_panic(v: &mut VecDeque<usize>) {
+    // CHECK-NOT: expect
+    // CHECK-NOT: panic
+    v.front();
+    v.front_mut();
+    v.back();
+    v.back_mut();
+}
-- 
cgit 1.4.1-3-g733a5