1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arrays/to-spliced-dense-elements.js b/js/src/jit-test/tests/arrays/to-spliced-dense-elements.js
new file mode 100644
index 0000000000..05b2ab8dad
--- /dev/null
+++ b/js/src/jit-test/tests/arrays/to-spliced-dense-elements.js
@@ -0,0 +1,13 @@
+// |jit-test|
+
+for (let i = 0; i < 1000; ++i) {
+  let arr = [0];
+  let result = arr.toSpliced(0, 0, 1, 2, 3);
+  assertEq(result.length, 4);
+}
+
+for (let i = 0; i < 1000; ++i) {
+  let arr = [0];
+  let result = arr.toSpliced(1, 0, 1, 2, 3);
+  assertEq(result.length, 4);
+}