mention the C++ exception problems on alpha


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 9bfac5c..352527e 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -593,6 +593,8 @@
 
 <li>Vararg functions are not supported.</li>
 
+<li>Due to the vararg problems, C++ exceptions do not work.  Small changes are required to the CFE (which break correctness in the exception handler) to compile the exception handling library (and thus the C++ standard library).</li>
+
 </ul>
 
 </div>