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-rw-r--r--include/wctype.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/wctype.h b/include/wctype.h
index 3a5af6e7..ee5be7c6 100644
--- a/include/wctype.h
+++ b/include/wctype.h
@@ -9,6 +9,11 @@ extern "C" {
#define __NEED_wctrans_t
#define __NEED_wctype_t
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#define __NEED_locale_t
+#endif
+
#include <bits/alltypes.h>
#undef WEOF