Allow friend declarations of defaulted special member functions. Only
definitions of such members are prohibited, not mere declarations.

llvm-svn: 158186
diff --git a/clang/test/SemaCXX/cxx0x-defaulted-functions.cpp b/clang/test/SemaCXX/cxx0x-defaulted-functions.cpp
index 2ab0f73..595d428 100644
--- a/clang/test/SemaCXX/cxx0x-defaulted-functions.cpp
+++ b/clang/test/SemaCXX/cxx0x-defaulted-functions.cpp
@@ -51,3 +51,9 @@
 struct lit { constexpr lit() {} };
 S<lit> s_lit; // ok
 S<bar> s_bar; // ok
+
+struct Friends {
+  friend S<bar>::S();
+  friend S<bar>::S(const S&);
+  friend S<bar>::S(S&&);
+};