Add m-esr52 at 52.6.0

1 files changed, 46 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/basic/testTypedArrayMaybeUndefined.js b/js/src/jit-test/tests/basic/testTypedArrayMaybeUndefined.js
new file mode 100644
index 000000000..e2dc94192
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testTypedArrayMaybeUndefined.js
@@ -0,0 +1,46 @@
+// Testing GETELEM and SETELEM on a typed array where the
+// type set of the object may include undefined or other
+// primitive types.
+
+// Argument x has type {void, double, Uint16Array}.
+function testSet(x) {
+    var y = 0;
+    for (var i=0; i<40; i++) {
+        x[i] = 3;
+    }
+    return x[10];
+}
+
+// Argument x has type {void, int32, Uint16Array}.
+function testGet(x) {
+    var y = 0;
+    for (var i=0; i<40; i++) {
+        y += x[i];
+    }
+    return y;
+}
+
+var arr = new Uint16Array(40);
+assertEq(testSet(arr), 3);
+try {
+    testSet(undefined);
+} catch(e) {
+    assertEq(e instanceof TypeError, true);
+}
+try {
+    testSet(4.5);
+} catch(e) {
+    assertEq(e instanceof TypeError, true);
+}
+
+assertEq(testGet(arr), 120);
+try {
+    testGet(undefined);
+} catch(e) {
+    assertEq(e instanceof TypeError, true);
+}
+try {
+    testGet(12345);
+} catch(e) {
+    assertEq(e instanceof TypeError, true);
+}