diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/sharedbuf/slice-same-memory.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/sharedbuf/slice-same-memory.js')
-rw-r--r-- | js/src/jit-test/tests/sharedbuf/slice-same-memory.js | 25 |
1 files changed, 25 insertions, 0 deletions
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); |