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-rw-r--r--newlib/libc/include/wchar.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/newlib/libc/include/wchar.h b/newlib/libc/include/wchar.h
index 234c71e00..3cb12e25f 100644
--- a/newlib/libc/include/wchar.h
+++ b/newlib/libc/include/wchar.h
@@ -16,6 +16,9 @@
/* For _mbstate_t definition. */
#include <sys/_types.h>
+/* For __STDC_ISO_10646__ */
+#include <sys/features.h>
+
#ifndef NULL
#define NULL 0
#endif