1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/SharedArrayBuffer/options-maxbytelength-allocation-limit.js b/js/src/tests/test262/built-ins/SharedArrayBuffer/options-maxbytelength-allocation-limit.js
new file mode 100644
index 0000000000..4462981d9e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/SharedArrayBuffer/options-maxbytelength-allocation-limit.js
@@ -0,0 +1,41 @@
+// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!this.hasOwnProperty('SharedArrayBuffer')||!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- SharedArrayBuffer,resizable-arraybuffer is not enabled unconditionally, requires shell-options
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-sharedarraybuffer-length
+description: >
+  Throws a RangeError if the requested Data Block is too large.
+info: |
+  SharedArrayBuffer ( length [ , options ] )
+
+  ...
+  4. Return ? AllocateSharedArrayBuffer(NewTarget, byteLength, requestedMaxByteLength).
+
+  AllocateSharedArrayBuffer ( constructor, byteLength [ , maxByteLength ] )
+
+  ...
+  7. Let block be ? CreateSharedByteDataBlock(allocLength).
+  ...
+
+  CreateSharedByteDataBlock ( size )
+
+  1. Let db be a new Shared Data Block value consisting of size bytes. If it is
+     impossible to create such a Shared Data Block, throw a RangeError exception.
+
+features: [SharedArrayBuffer, resizable-arraybuffer]
+---*/
+
+assert.throws(RangeError, function() {
+  // Allocating 7 PiB should fail with a RangeError.
+  // Math.pow(1024, 5) = 1125899906842624
+  new SharedArrayBuffer(0, {maxByteLength: 7 * 1125899906842624});
+}, "`maxByteLength` option is 7 PiB");
+
+assert.throws(RangeError, function() {
+  // Allocating almost 8 PiB should fail with a RangeError.
+  // Math.pow(2, 53) = 9007199254740992
+  new SharedArrayBuffer(0, {maxByteLength: 9007199254740992 - 1});
+}, "`maxByteLength` option is Math.pow(2, 53) - 1");
+
+reportCompare(0, 0);