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Kmake/deps/v8/test/mjsunit/turboshaft/maglev-frontend/not-initialized-let-in-switch.js

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2026-05-26 23:36:42 -07:00
// Copyright 2024 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --turbolev --turbofan
function ref_err_if_hole(x) {
switch (x) {
case 0:
let v = 17;
case 1:
return v;
}
}
%PrepareFunctionForOptimization(ref_err_if_hole);
assertEquals(17, ref_err_if_hole(0));
%OptimizeFunctionOnNextCall(ref_err_if_hole);
assertEquals(17, ref_err_if_hole(0));
assertThrows(() => ref_err_if_hole(1), ReferenceError,
"Cannot access 'v' before initialization");
assertOptimized(ref_err_if_hole);