diff --git test/Sema/wchar.c test/Sema/wchar.c
index 28ec2f1..8708aa0 100644
--- test/Sema/wchar.c
+++ test/Sema/wchar.c
@@ -6,6 +6,8 @@ typedef __WCHAR_TYPE__ wchar_t;
 #if defined(_WIN32) || defined(_M_IX86) || defined(__CYGWIN__) \
  || defined(_M_X64) || defined(SHORT_WCHAR)
   #define WCHAR_T_TYPE unsigned short
+#elif defined(__arm)
+  #define WCHAR_T_TYPE unsigned int
 #elif defined(__sun) || defined(__AuroraUX__)
   #define WCHAR_T_TYPE long
 #else /* Solaris or AuroraUX. */