From d42ceee61e51495fdcda8ef7c66c5c3b8fc827da Mon Sep 17 00:00:00 2001
From: Matthias Maier <tamiko@43-1.org>
Date: Thu, 20 Aug 2015 23:45:46 -0500
Subject: [PATCH] CMake: Add to the relevant upstream bug report

---
 cmake/checks/check_01_cxx_features.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/checks/check_01_cxx_features.cmake b/cmake/checks/check_01_cxx_features.cmake
index 974b2ccb6e..c39599d7a4 100644
--- a/cmake/checks/check_01_cxx_features.cmake
+++ b/cmake/checks/check_01_cxx_features.cmake
@@ -122,6 +122,8 @@ IF(NOT DEFINED DEAL_II_WITH_CXX14 OR DEAL_II_WITH_CXX14)
     # Clang-3.5* or older, bail out with a spurious error message in case
     # of an undeduced auto return type.
     #
+    # https://llvm.org/bugs/show_bug.cgi?id=16876
+    #
     PUSH_CMAKE_REQUIRED("${DEAL_II_CXX_FLAGS_DEBUG}")
     CHECK_CXX_SOURCE_COMPILES(
       "
-- 
2.39.5