1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/typedarray/resizable-typedarray-byteoffset-sab.js b/js/src/jit-test/tests/typedarray/resizable-typedarray-byteoffset-sab.js
new file mode 100644
index 0000000000..6142d75978
--- /dev/null
+++ b/js/src/jit-test/tests/typedarray/resizable-typedarray-byteoffset-sab.js
@@ -0,0 +1,43 @@
+// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize||!this.SharedArrayBuffer
+
+function testResizableArrayBufferAutoLength() {
+  for (let i = 0; i < 4; ++i) {
+    let sab = new SharedArrayBuffer(i, {maxByteLength: i + 100});
+    let ta = new Int8Array(sab);
+    for (let j = 0; j < 100; ++j) {
+      assertEq(ta.byteOffset, 0);
+
+      sab.grow(i + j + 1);
+      assertEq(ta.byteOffset, 0);
+    }
+  }
+}
+for (let i = 0; i < 2; ++i) testResizableArrayBufferAutoLength();
+
+function testResizableArrayBufferAutoLengthNonZeroOffset() {
+  for (let i = 1; i < 4 + 1; ++i) {
+    let sab = new SharedArrayBuffer(i + 1, {maxByteLength: i + 100 + 1});
+    let ta = new Int8Array(sab, 1);
+    for (let j = 0; j < 100; ++j) {
+      assertEq(ta.byteOffset, 1);
+
+      sab.grow(i + j + 2);
+      assertEq(ta.byteOffset, 1);
+    }
+  }
+}
+for (let i = 0; i < 2; ++i) testResizableArrayBufferAutoLengthNonZeroOffset();
+
+function testResizableArrayBufferNonZeroOffset() {
+  for (let i = 2; i < 4 + 2; ++i) {
+    let sab = new SharedArrayBuffer(i + 2, {maxByteLength: i + 100 + 2});
+    let ta = new Int8Array(sab, 1, 1);
+    for (let j = 0; j < 100; ++j) {
+      assertEq(ta.byteOffset, 1);
+
+      sab.grow(i + j + 3);
+      assertEq(ta.byteOffset, 1);
+    }
+  }
+}
+for (let i = 0; i < 2; ++i) testResizableArrayBufferNonZeroOffset();