Index: libcxx/include/stdio.h
--- libcxx/include/stdio.h.orig
+++ libcxx/include/stdio.h
@@ -115,6 +115,8 @@ void perror(const char* s);
 #undef clearerr
 #undef feof
 #undef ferror
+#undef putchar
+#undef getchar
 
 #endif