This is a testharness.js-based test. [FAIL] Getting out-of-range argument assert_throws_js: function "() => exn.getArg(tag, value)" threw object "TypeError: WebAssembly.Exception.getArg(): Index must be convertible to a valid number" ("TypeError") expected instance of function "function RangeError() { [native code] }" ("RangeError") Harness: the test ran to completion.