From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../jit-test/tests/sharedbuf/slice-same-memory.js | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 js/src/jit-test/tests/sharedbuf/slice-same-memory.js (limited to 'js/src/jit-test/tests/sharedbuf/slice-same-memory.js') diff --git a/js/src/jit-test/tests/sharedbuf/slice-same-memory.js b/js/src/jit-test/tests/sharedbuf/slice-same-memory.js new file mode 100644 index 0000000000..22c2215424 --- /dev/null +++ b/js/src/jit-test/tests/sharedbuf/slice-same-memory.js @@ -0,0 +1,25 @@ +// |jit-test| skip-if: !this.SharedArrayBuffer + +load(libdir + "asserts.js"); + +var sab = new SharedArrayBuffer(1 * Int32Array.BYTES_PER_ELEMENT); + +// Make a copy, sharing the same memory +var sab2 = (setSharedObject(sab), getSharedObject()); + +// Assert it's not the same object +assertEq(sab === sab2, false); + +// Assert they're sharing memory +new Int32Array(sab)[0] = 0x12345678; +assertEq(new Int32Array(sab2)[0], 0x12345678) + +sab.constructor = { + [Symbol.species]: function(length) { + return sab2; + } +}; + +// This should throw because the buffer being sliced shares memory with the new +// buffer it constructs. +assertThrowsInstanceOf(() => sab.slice(), TypeError); -- cgit v1.2.3