[unwind] add required #include

llvm-svn: 192245

diff --git a/libcxxabi/src/Unwind/Registers.hpp b/libcxxabi/src/Unwind/Registers.hpp
index c50c8cc..a0050dd 100644 (file)
--- a/libcxxabi/src/Unwind/Registers.hpp
+++ b/libcxxabi/src/Unwind/Registers.hpp
@@ -14,6 +14,7 @@
 #define __REGISTERS_HPP__
 
 #include <stdint.h>
+#include <strings.h>
 
 #include "libunwind.h"
 #include "config.h"