diff -r 000000000000 -r 6474c204b198 js/src/jsapi-tests/testUncaughtError.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jsapi-tests/testUncaughtError.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsapi-tests/tests.h"
+
+using JS::CreateTypeError;
+using JS::Rooted;
+using JS::ObjectValue;
+using JS::Value;
+
+static size_t uncaughtCount = 0;
+
+BEGIN_TEST(testUncaughtError)
+{
+    JSErrorReporter old = JS_SetErrorReporter(cx, UncaughtErrorReporter);
+
+    CHECK(uncaughtCount == 0);
+
+    Rooted<JSString*> empty(cx, JS_GetEmptyString(JS_GetRuntime(cx)));
+    if (!empty)
+        return false;
+
+    Rooted<Value> err(cx);
+    if (!CreateTypeError(cx, empty, empty, 0, 0, nullptr, empty, &err))
+        return false;
+
+    Rooted<JSObject*> errObj(cx, &err.toObject());
+    if (!JS_SetProperty(cx, errObj, "fileName", err))
+        return false;
+    if (!JS_SetProperty(cx, errObj, "lineNumber", err))
+        return false;
+    if (!JS_SetProperty(cx, errObj, "columnNumber", err))
+        return false;
+    if (!JS_SetProperty(cx, errObj, "stack", err))
+        return false;
+    if (!JS_SetProperty(cx, errObj, "message", err))
+        return false;
+
+    JS_SetPendingException(cx, err);
+    JS_ReportPendingException(cx);
+
+    CHECK(uncaughtCount == 1);
+
+    JS_SetErrorReporter(cx, old);
+
+    return true;
+}
+
+static void
+UncaughtErrorReporter(JSContext *cx, const char *message, JSErrorReport *report)
+{
+    uncaughtCount++;
+}
+
+END_TEST(testUncaughtError)