1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/constructor-regexp-unicode.js b/js/src/tests/non262/RegExp/constructor-regexp-unicode.js
new file mode 100644
index 0000000000..b348c34a01
--- /dev/null
+++ b/js/src/tests/non262/RegExp/constructor-regexp-unicode.js
@@ -0,0 +1,9 @@
+var BUGNUMBER = 1274393;
+var summary = "RegExp constructor should check the pattern syntax again when adding unicode flag.";
+
+print(BUGNUMBER + ": " + summary);
+
+assertThrowsInstanceOf(() => RegExp(/\-/, "u"), SyntaxError);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);