1 files changed, 125 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug977966.js b/js/src/jit-test/tests/ion/bug977966.js
new file mode 100644
index 0000000000..6d80c5c376
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug977966.js
@@ -0,0 +1,125 @@
+// |jit-test| --ion-eager
+
+function join_check() {
+    var lengthWasCalled = false;
+    var obj = {"0": "", "1": ""};
+    Object.defineProperty(obj, "length", {
+        get : function(){ lengthWasCalled = true; return 2; },
+        enumerable : true,
+        configurable : true
+    });
+
+    var res = Array.prototype.join.call(obj, { toString: function () {
+        if (lengthWasCalled)
+            return "good";
+        else
+            return "bad";
+    }})
+
+    assertEq(res, "good");
+}
+function split(i) {
+    var x = (i + "->" + i).split("->");
+    assertEq(x[0], "" + i);
+    return i;
+}
+
+function join(i) {
+    var x = [i, i].join("->");
+    assertEq(x, i + "->" + i);
+    return i;
+}
+
+function split_join(i) {
+    var x = (i + "-" + i).split("-").join("->");
+    assertEq(x, i + "->" + i);
+    return i;
+}
+
+function split_join_2(i) {
+    var x = (i + "-" + i).split("-");
+    x.push("" + i);
+    var res = x.join("->");
+    assertEq(res, i + "->" + i + "->" + i);
+    return i;
+}
+
+function resumeHere() { bailout(); }
+
+function split_join_3(i) {
+    var x = (i + "-" + i).split("-");
+    resumeHere();
+    var res = x.join("->");
+    assertEq(res, i + "->" + i);
+    return i;
+}
+
+function trip(i) {
+    if (i == 99)
+        assertEq(myjoin.arguments[1][0], "" + i)
+}
+
+function myjoin(i, x) {
+    trip(i);
+    return x.join("->");
+}
+
+function split_join_4(i) {
+    var x = (i + "-" + i).split("-");
+    var res = myjoin(i, x);
+    assertEq(res, i + "->" + i);
+    return i;
+}
+
+function split_join_5(i) {
+    var s = "abca";
+    assertEq(s.split("a").join("") + i, "bc" + i);
+}
+
+function split_join_two_byte_char(i) {
+    var s1 = "ab";
+    assertEq(s1.split("").join("\u03c0"), "a\u03c0b");
+    var s2 = i + "\u03c0" + i;
+    assertEq(s2.split("\u03c0").join("-"), i + "-" + i);
+}
+
+function split_join_underflow(i)
+{
+    var s = "";
+    assertEq(s.split("").join("x" + i), "");
+}
+
+// Check that we do not consider the string argument of join as a replacement
+// pattern, as the string replace primitive is supposed to do.
+function split_join_pattern(i) {
+    var s = i + "-" + i;
+    assertEq(s.split("-").join("$`$&$'"), i + "$`$&$'" + i);
+    assertEq(s.replace("-", "$`$&$'"), "" + i + i + "-" + i + i);
+}
+
+// Check that, as opposed to String.replace, we are doing a global replacement
+// as String.split does.
+function split_join_multiple(i) {
+    var s1 = i + "-\n-" + i + "-\n-" + i;
+    assertEq(s1.split("-\n-").join("-")  , i + "-" + i + "-" + i);
+    assertEq(s1.replace("-\n-", "-")     , i + "-" + i + "-\n-" + i);
+
+    var s2 = "abc";
+    assertEq(s2.split("").join("" + i)   , "a" + i + "b" + i + "c");
+    assertEq(s2.replace("", "" + i)      , i + "abc");
+}
+
+for (var i = 0; i < 1000; ++i) {
+    join_check(i);
+    split(i);
+    join(i);
+    split_join(i);
+    split_join_2(i);
+    split_join_3(i);
+    split_join_4(i);
+    split_join_5(i);
+    split_join_pattern(i);
+    split_join_multiple(i);
+    split_join_two_byte_char(i);
+    split_join_underflow(i);
+}