1 files changed, 56 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/regexp/replace-global-lambda.js b/js/src/jit-test/tests/regexp/replace-global-lambda.js
new file mode 100644
index 0000000000..ca102c8d62
--- /dev/null
+++ b/js/src/jit-test/tests/regexp/replace-global-lambda.js
@@ -0,0 +1,56 @@
+"use strict";
+
+function testNoCaptureGroups() {
+  var s = "a..bb.cba.";
+  for (var i = 0; i < 20; i++) {
+    var log = "";
+    var res = s.replace(/a|b/g, function(...args) {
+      assertEq(this, undefined);
+      assertEq(args.length, 3);
+      assertEq(args[2], s);
+      log += "(" + args[0] + args[1] + ")";
+      return "X";
+    });
+    assertEq(res, "X..XX.cXX.");
+    assertEq(log, "(a0)(b3)(b4)(b7)(a8)");
+  }
+}
+testNoCaptureGroups();
+
+function testCaptureGroups() {
+  var s = "a..bb.cba.";
+  for (var i = 0; i < 20; i++) {
+    var log = "";
+    var res = s.replace(/(a)|(b)/g, function(...args) {
+      assertEq(this, undefined);
+      assertEq(args.length, 5);
+      assertEq(args[4], s);
+      log += "(" + args[0] + args[1] + args[2] + args[3] + ")";
+      return "X";
+    });
+    assertEq(res, "X..XX.cXX.");
+    assertEq(log, "(aaundefined0)(bundefinedb3)(bundefinedb4)(bundefinedb7)(aaundefined8)");
+  }
+}
+testCaptureGroups();
+
+// Calling RegExp#compile in the callback has no effect, because |replace| will
+// create a new RegExp object from the original source/flags if this happens.
+function testCaptureGroupsChanging() {
+  var s = "a..bb.cba.";
+  for (var i = 0; i < 20; i++) {
+    var log = "";
+    var re = /a|b/g;
+    var res = s.replace(re, function(...args) {
+      assertEq(this, undefined);
+      assertEq(args.length, 3);
+      assertEq(args[2], s);
+      log += "(" + args[0] + args[1] + ")";
+      re.compile("(a)|(b)", "g");
+      return "X";
+    });
+    assertEq(res, "X..XX.cXX.");
+    assertEq(log, "(a0)(b3)(b4)(b7)(a8)");
+  }
+}
+testCaptureGroupsChanging();