1 files changed, 26 insertions, 0 deletions
diff --git a/test/CXX/drs/dr23xx.cpp b/test/CXX/drs/dr23xx.cpp
new file mode 100644
index 0000000000..87db0d4c9b
--- /dev/null
+++ b/test/CXX/drs/dr23xx.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++2a %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+
+#if __cplusplus <= 201103L
+// expected-no-diagnostics
+#endif
+
+namespace dr2387 { // dr2387: 9
+#if __cplusplus >= 201402L
+  template<int> int a = 0;
+  extern template int a<0>; // ok
+
+  template<int> static int b = 0;
+  extern template int b<0>; // expected-error {{internal linkage}}
+
+  template<int> const int c = 0;
+  extern template const int c<0>; // ok, has external linkage despite 'const'
+
+  template<typename T> T d = 0;
+  extern template int d<int>;
+  extern template const int d<const int>;
+#endif
+}