1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/wait/bigint/negative-timeout-agent.js b/js/src/tests/test262/built-ins/Atomics/wait/bigint/negative-timeout-agent.js
new file mode 100644
index 0000000000..4a177cb8b4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/wait/bigint/negative-timeout-agent.js
@@ -0,0 +1,42 @@
+// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics
+// Copyright (C) 2018 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-atomics.wait
+description: >
+  Test that Atomics.wait times out with a negative timeout
+includes: [atomicsHelper.js]
+features: [Atomics, BigInt, SharedArrayBuffer, TypedArray]
+---*/
+
+const i64a = new BigInt64Array(
+  new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)
+);
+
+const RUNNING = 1;
+
+$262.agent.start(`
+  $262.agent.receiveBroadcast(function(sab) {
+    const i64a = new BigInt64Array(sab);
+    Atomics.add(i64a, ${RUNNING}, 1n);
+
+    $262.agent.report(Atomics.wait(i64a, 0, 0n, -5)); // -5 => 0
+    $262.agent.leaving();
+  });
+`);
+
+$262.agent.safeBroadcast(i64a);
+$262.agent.waitUntil(i64a, RUNNING, 1n);
+
+// Try to yield control to ensure the agent actually started to wait.
+$262.agent.tryYield();
+
+assert.sameValue(
+  $262.agent.getReport(),
+  'timed-out',
+  '$262.agent.getReport() returns "timed-out"'
+);
+assert.sameValue(Atomics.notify(i64a, 0), 0, 'Atomics.notify(i64a, 0) returns 0');
+
+reportCompare(0, 0);