diff options
Diffstat (limited to 'js/src/jit-test/tests/fields/ion-private-idempotent.js')
-rw-r--r-- | js/src/jit-test/tests/fields/ion-private-idempotent.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/fields/ion-private-idempotent.js b/js/src/jit-test/tests/fields/ion-private-idempotent.js new file mode 100644 index 0000000000..24d7c1793e --- /dev/null +++ b/js/src/jit-test/tests/fields/ion-private-idempotent.js @@ -0,0 +1,33 @@ +// |jit-test| --enable-private-fields; + +var acc = 0; +const loopCount = 100; + +class A { + #x = 1; + static loopRead(o) { + for (var i = 0; i < loopCount; i++) { + // If this getelem were hoisted out of the loop, + // we need the IC that is attached to that to + // correctly throw if .#x is not in o. + var b = o.#x; + acc += 1; + } + } +}; + +// Two non-A objects, because we're concerned not about the first +// attempt to read .#x from a non A, but the second, because if +// we attach the wrong IC, we'll attach an IC that provides +// regular object semantics, which would be to return undefined. +var array = [new A, new A, new A, {}, {}]; +for (var e of array) { + acc = 0; + try { + A.loopRead(e); + assertEq(acc, loopCount); + } catch (e) { + assertEq(e instanceof TypeError, true); + assertEq(acc, 0); + } +} |