diff options
Diffstat (limited to 'js/src/jit-test/tests/typedarray/resizable-buffer-inlined-data-moved.js')
-rw-r--r-- | js/src/jit-test/tests/typedarray/resizable-buffer-inlined-data-moved.js | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/typedarray/resizable-buffer-inlined-data-moved.js b/js/src/jit-test/tests/typedarray/resizable-buffer-inlined-data-moved.js new file mode 100644 index 0000000000..1206edd5e5 --- /dev/null +++ b/js/src/jit-test/tests/typedarray/resizable-buffer-inlined-data-moved.js @@ -0,0 +1,53 @@ +// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize + +function fillArrayBuffer(rab) { + let fill = new Int8Array(rab); + for (let i = 0; i < fill.length; ++i) fill[i] = i + 1; +} + +function test() { + let rab = new ArrayBuffer(4, {maxByteLength: 4}); + let ta = new Int8Array(rab, 2, 2); + + fillArrayBuffer(rab); + + assertEq(ta[0], 3); + assertEq(ta[1], 4); + + // Shrink to make |ta| out-of-bounds. + rab.resize(3); + + // Request GC to move inline data. + gc(); + + // Grow to make |ta| in-bounds again. + rab.resize(4); + + assertEq(ta[0], 3); + assertEq(ta[1], 0); +} +test(); + + +function testAutoLength() { + let rab = new ArrayBuffer(4, {maxByteLength: 4}); + let ta = new Int8Array(rab, 2); + + fillArrayBuffer(rab); + + assertEq(ta[0], 3); + assertEq(ta[1], 4); + + // Shrink to make |ta| out-of-bounds. + rab.resize(1); + + // Request GC to move inline data. + gc(); + + // Grow to make |ta| in-bounds again. + rab.resize(4); + + assertEq(ta[0], 0); + assertEq(ta[1], 0); +} +testAutoLength(); |