Include initializer_list from utility
The C++11 and C++14 standards both say in the header <utility> synopsis that
<utility> shall include <initializer_list>.
llvm-svn: 266808
diff --git a/libcxx/include/utility b/libcxx/include/utility
index 6db323e..e9db238 100644
--- a/libcxx/include/utility
+++ b/libcxx/include/utility
@@ -178,6 +178,7 @@
#include <__config>
#include <__tuple>
#include <type_traits>
+#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header