1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/string-char.js b/js/src/jit-test/tests/warp/string-char.js
new file mode 100644
index 0000000000..fc41e5079a
--- /dev/null
+++ b/js/src/jit-test/tests/warp/string-char.js
@@ -0,0 +1,15 @@
+function f(x) {
+  assertEq(x.charCodeAt(1), 0x62);
+  assertEq(x.charAt(1), "b");
+  assertEq(x[1], "b");
+}
+
+function g() {
+  for (var i = 0; i < 100; i++) {
+    f("abc");
+  }
+}
+
+for (var j = 0; j < 10; j++) {
+  g();
+}