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Add codegen test to guard against VecDeque optimization regression #116047

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Sep 23, 2023
Merged

Add codegen test to guard against VecDeque optimization regression #116047

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17 changes: 17 additions & 0 deletions 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();
}
}