rust/tests/codegen/vecdeque-nonempty-get-no-panic.rs

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// Guards against regression for optimization discussed in issue #80836
// compile-flags: -O
// ignore-debug: the debug assertions get in the way
#![crate_type = "lib"]
use std::collections::VecDeque;
// CHECK-LABEL: @front
// CHECK: ret void
#[no_mangle]
pub fn front(v: VecDeque<usize>) {
if !v.is_empty() {
v.get(0).unwrap();
}
}