diff --git a/clang/test/CXX/drs/cwg31xx.cpp b/clang/test/CXX/drs/cwg31xx.cpp
new file mode 100644
index 0000000000000..3c88d5ff7c607
--- /dev/null
+++ b/clang/test/CXX/drs/cwg31xx.cpp
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -std=c++98 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++11 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++14 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++17 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++20 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++23 -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+// RUN: %clang_cc1 -std=c++2c -fexceptions -fcxx-exceptions -pedantic-errors %s -verify-directives -verify=expected
+
+
+// expected-no-diagnostics
+
+namespace cwg3106 { // cwg3106: 2.7
+#if __cplusplus >= 201103L
+const char str[9] = R"(\u{1234})";
+#endif
+} // namespace cwg3106
diff --git a/clang/www/cxx_dr_status.html b/clang/www/cxx_dr_status.html
index cb0236b46e580..416c17e33a9ee 100755
--- a/clang/www/cxx_dr_status.html
+++ b/clang/www/cxx_dr_status.html
@@ -21563,7 +21563,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>[<a href="https://wg21.link/lex.universal.char">lex.universal.char</a>]</td>
     <td>DR</td>
     <td>Redundant exclusion of (non-existent) UCNs in <I>r-char-sequence</I>s</td>
-    <td class="unknown" align="center">Unknown</td>
+    <td class="full" align="center">Clang 2.7</td>
   </tr>
   <tr id="3107">
     <td><a href="https://cplusplus.github.io/CWG/issues/3107.html">3107</a></td>