Add m-esr52 at 52.6.0

1 files changed, 36 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/basic/typed-array-index-out-of-range.js b/js/src/jit-test/tests/basic/typed-array-index-out-of-range.js
new file mode 100644
index 000000000..a0506dfcf
--- /dev/null
+++ b/js/src/jit-test/tests/basic/typed-array-index-out-of-range.js
@@ -0,0 +1,36 @@
+
+// Out of bounds writes on typed arrays are uneffectful for all integers.
+
+var x = new Int32Array(10);
+
+function f() {
+    for (var i = -100; i < 100; i++) {
+	x[i] = i + 1;
+	if (i >= 0 && i < 10)
+	    assertEq(x[i], i + 1);
+	else
+	    assertEq(x[i], undefined);
+    }
+}
+f();
+
+// Really big integers not representable with a double or uint64 are still integers.
+
+var bigint = "" + Math.pow(2, 53);
+x[bigint] = "twelve";
+assertEq(x[bigint], undefined);
+
+x["9999999999999999999999"] = "twelve";
+assertEq(x["9999999999999999999999"], undefined);
+
+// Except when their toString() makes them not look like integers!
+x[9999999999999999999999] = "twelve";
+assertEq(x[9999999999999999999999], "twelve");
+
+// Infinity and -Infinity maybe are supposed to be integers, but they aren't currently.
+
+x["Infinity"] = "twelve";
+assertEq(x["Infinity"], "twelve");
+
+x["-Infinity"] = "twelve";
+assertEq(x["-Infinity"], "twelve");