diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug576837-regexp.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug576837-regexp.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/*
+ * Check that builtin character classes within ranges produce syntax
+ * errors.
+ *
+ * Note that, per the extension in bug 351463, SpiderMonkey permits hyphens
+ * adjacent to character class escapes in character classes, treating them as a
+ * hyphen pattern character. Therefore /[\d-\s]/ is okay
+ *
+ * Note: /\b/ is the backspace escape, which is a single pattern character,
+ * though it looks deceptively like a character class.
+ */
+
+function isRegExpSyntaxError(pattern) {
+    try {
+        var re = new RegExp(pattern);
+    } catch (e) {
+        if (e instanceof SyntaxError)
+            return true;
+    }
+    return false;
+}
+
+assertEq(isRegExpSyntaxError('[C-\\s]'), true);
+assertEq(isRegExpSyntaxError('[C-\\d]'), true);
+assertEq(isRegExpSyntaxError('[C-\\W]'), true);
+assertEq(isRegExpSyntaxError('[C-]'), false);
+assertEq(isRegExpSyntaxError('[-C]'), false);
+assertEq(isRegExpSyntaxError('[C-C]'), false);
+assertEq(isRegExpSyntaxError('[C-C]'), false);
+assertEq(isRegExpSyntaxError('[\\b-\\b]'), false);
+assertEq(isRegExpSyntaxError('[\\B-\\B]'), false);
+assertEq(isRegExpSyntaxError('[\\b-\\B]'), false);
+assertEq(isRegExpSyntaxError('[\\B-\\b]'), true);
+assertEq(isRegExpSyntaxError('[\\b-\\w]'), true);
+assertEq(isRegExpSyntaxError('[\\B-\\w]'), true);
+
+/* Extension. */
+assertEq(isRegExpSyntaxError('[\\s-\\s]'), false);
+assertEq(isRegExpSyntaxError('[\\W-\\s]'), false);
+assertEq(isRegExpSyntaxError('[\\s-\\W]'), false);
+assertEq(isRegExpSyntaxError('[\\W-C]'), false);
+assertEq(isRegExpSyntaxError('[\\d-C]'), false);
+assertEq(isRegExpSyntaxError('[\\s-C]'), false);
+assertEq(isRegExpSyntaxError('[\\w-\\b]'), false);
+assertEq(isRegExpSyntaxError('[\\w-\\B]'), false);