diff --git a/tests/codegen/vecdeque-nonempty-get-no-panic.rs b/tests/codegen/vecdeque-nonempty-get-no-panic.rs new file mode 100644 index 0000000000000..c2877d2d0ca90 --- /dev/null +++ b/tests/codegen/vecdeque-nonempty-get-no-panic.rs @@ -0,0 +1,17 @@ +// 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) { + if !v.is_empty() { + v.get(0).unwrap(); + } +}