1 files changed, 135 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug851792.js b/js/src/jit-test/tests/ion/bug851792.js
new file mode 100644
index 0000000000..598bf4f8ed
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug851792.js
@@ -0,0 +1,135 @@
+// Based on tests/ion/typed-arrays-1.js, but with string indexes
+function testInt8() {
+    var arr1 = new Int8Array(50);
+    var arr2 = new Uint8Array(50);
+    var arr3 = new Uint8ClampedArray(50);
+
+    for (var i=0; i<arr1.length; i++) {
+        arr1[i] = arr2[i] = arr3[i] = i * 8;
+    }
+    var res = 0;
+    for (var i=0; i<arr1.length; i++) {
+        res += arr1[i+""] + arr2[i+""] + arr3[i+""] + arr2["10".concat("")];
+    }
+    assertEq(res, 18334);
+}
+testInt8();
+
+function testInt16() {
+    var arr1 = new Int16Array(70);
+    var arr2 = new Uint16Array(70);
+
+    for (var i=0; i<arr1.length; i++) {
+        arr1[i] = arr2[i] = i * 1000;
+    }
+    var res = 0;
+    for (var i=0; i<arr1.length; i++) {
+        res += arr1[i+""] + arr2[i+""] + arr2["1".concat("")] + arr1["3".concat("")];
+    }
+    assertEq(res, 2423024);
+}
+testInt16();
+
+function testInt32() {
+    var arr = new Int32Array(60);
+    arr[0] = -50;
+    for (var i=1; i<arr.length; i++) {
+        arr[i] = arr[(i-1)+""] + arr["0".concat("")];
+        ++arr[0];
+    }
+    assertEq(arr[(arr.length-1)+""], -1289);
+}
+testInt32();
+
+function testUint32() {
+    function sum(arr) {
+        var res = 0;
+        for (var i=0; i<arr.length; i++) {
+            res += arr[i+""];
+        }
+        return res;
+    }
+    var arr = new Uint32Array(100);
+    for (var i=0; i<arr.length; i++) {
+        arr[i] = i;
+    }
+
+    // Compile sum() to read int32 values.
+    assertEq(sum(arr), 4950);
+
+    // Add a large uint32 so that the sum no longer fits in an
+    // int32. sum() should be recompiled to return a double.
+    arr[50] = 0xffffeeee;
+    assertEq(sum(arr), 4294967826);
+}
+testUint32();
+
+function testFloat() {
+    var arr1 = new Float32Array(75);
+    var arr2 = new Float64Array(75);
+    arr1[0] = arr2[0] = Math.PI * 1234567.8;
+
+    for (var i=1; i<75; i++) {
+        arr1[i] = arr1[(i-1)+""] + arr1[0];
+        arr2[i] = arr2[(i-1)+""] + arr2[0];
+    }
+    assertEq(arr1["74".concat("")] > 290888255, true);
+    assertEq(arr1["74".concat("")] < 290888257, true);
+
+    assertEq(arr2["74".concat("")] > 290888184, true);
+    assertEq(arr2["74".concat("")] < 290888185, true);
+}
+testFloat();
+
+function testCanonicalNaN() {
+    // NaN values have to be canonicalized. Otherwise, malicious scripts could
+    // construct arbitrary Value's (due to our NaN boxing Value representation).
+    var buf = new ArrayBuffer(16);
+    var uint32 = new Uint32Array(buf);
+    var f64 = new Float64Array(buf);
+    var f32 = new Float32Array(buf);
+
+    // Evil: write a JSVAL_TYPE_OBJECT type tag...
+    uint32[0] = 0xffffff87;
+    uint32[1] = 0xffffff87;
+
+    // Make sure this value is interpreted as a double.
+    for (var i=0; i<3; i++) {
+        assertEq(isNaN(f64["0".concat("")]), true);
+        assertEq(isNaN(f32["0".concat("")]), true);
+    }
+}
+testCanonicalNaN();
+
+function testOutOfBounds() {
+    var buf = new ArrayBuffer(16);
+    var uint32 = new Uint32Array(buf);
+
+    uint32[0] = 0;
+    uint32[1] = 1;
+
+    for (var i=0; i<3; i++) {
+      assertEq(uint32["0".concat("")], 0);
+      assertEq(uint32["1".concat("")], 1);
+      assertEq(uint32["2".concat("")], 0);
+      assertEq(uint32["17".concat("")], undefined);
+    }
+}
+testOutOfBounds();
+
+function testStrangeIndexes() {
+    var buf = new ArrayBuffer(16);
+    var uint32 = new Uint32Array(buf);
+
+    uint32[0] = 0;
+    uint32[1] = 1;
+
+    indexes = ["0", "1", "2", "3", "17", "3.5", "NaN", "undefined", "null"];
+    solutions = [0, 1, 0, 0, undefined, undefined, undefined, undefined, undefined];
+
+    for (var i=0; i<indexes.length; i++) {
+      assertEq(uint32[indexes[i]], solutions[i]);
+    }
+}
+testStrangeIndexes();
+