1 files changed, 125 insertions, 0 deletions
diff --git a/js/src/tests/non262/lexical-environment/for-loop-with-bindings-added-at-runtime.js b/js/src/tests/non262/lexical-environment/for-loop-with-bindings-added-at-runtime.js
new file mode 100644
index 0000000000..f6abf3d0cd
--- /dev/null
+++ b/js/src/tests/non262/lexical-environment/for-loop-with-bindings-added-at-runtime.js
@@ -0,0 +1,125 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = "for-loop-with-bindings-added-at-runtime.js";
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 1149797;
+var summary =
+  "Don't assert when freshening the scope chain for a for-loop whose head " +
+  "contains a lexical declaration, where the loop body might add more " +
+  "bindings at runtime";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+for (let x = 0; x < 9; ++x)
+  eval("var y");
+
+{
+  for (let x = 0; x < 9; ++x)
+    eval("var y");
+}
+
+function f1()
+{
+  for (let x = 0; x < 9; ++x)
+    eval("var y");
+}
+f1();
+
+function f2()
+{
+  {
+    for (let x = 0; x < 9; ++x)
+      eval("var y");
+  }
+}
+f2();
+
+for (let x = 0; x < 9; ++x)
+{
+  // deliberately inside a block statement
+  eval("var y");
+}
+
+{
+  for (let x = 0; x < 9; ++x)
+  {
+    // deliberately inside a block statement
+    eval("var y");
+  }
+}
+
+function g1()
+{
+  for (let x = 0; x < 9; ++x)
+  {
+    // deliberately inside a block statement
+    eval("var y");
+  }
+}
+g1();
+
+function g2()
+{
+  {
+    for (let x = 0; x < 9; ++x)
+    {
+      // deliberately inside a block statement
+      eval("var y");
+    }
+  }
+}
+g2();
+
+for (let x = 0; x < 9; ++x) {
+  (function() {
+      eval("var y");
+  })();
+}
+
+{
+  for (let x = 0; x < 9; ++x)
+  {
+    // deliberately inside a block statement
+    (function() {
+        eval("var y");
+    })();
+  }
+}
+
+function h1()
+{
+  for (let x = 0; x < 9; ++x)
+  {
+    // deliberately inside a block statement
+    (function() {
+        eval("var y");
+    })();
+  }
+}
+h1();
+
+function h2()
+{
+  {
+    for (let x = 0; x < 9; ++x)
+    {
+      // deliberately inside a block statement
+      (function() { eval("var y"); })();
+    }
+  }
+}
+h2();
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");