1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1830107.js b/js/src/jit-test/tests/ion/bug1830107.js
new file mode 100644
index 0000000000..4b8818ce24
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1830107.js
@@ -0,0 +1,15 @@
+// |jit-test| --fast-warmup
+function read(a, index, expected) {
+    for (var i = 0; i < 1; i++) {
+        a[index + 10];
+        assertEq(a[index], expected);
+    }
+}
+var a = new Int8Array(11);
+a[0] = 5;
+for (var i = 0; i < 100; i++) {
+    read(a, 0, 5);
+}
+for (var i = -1; i > -10; --i) {
+    read(a, i, undefined);
+}