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// |jit-test| error: ReferenceError

// We elide the uninitialised lexical check for the second access to |x|,
// because we statically know that the first access will throw an error.
// `!x` is compiled straight from bytecode without going through any ICs, so
// already on first (eager) compilation we may be Warp compiling.

function testNot(x = (x, !x)) {
    function inner() {
        // Close over |x|.
        x;
    }
}
testNot();