[libc++] Only include_next <wctype.h> if it exists

This allows building on platforms that don't provide that header.
llvm · Nov 17, 2020 · 121f27f · 121f27f
1 parent 1d7abcf
commit 121f27f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/libcxx/include/wctype.h b/libcxx/include/wctype.h
@@ -50,7 +50,9 @@ wctrans_t wctrans(const char* property);
 #pragma GCC system_header
 #endif
 
-#include_next <wctype.h>
+#if __has_include_next(<wctype.h>)
+#   include_next <wctype.h>
+#endif
 
 #ifdef __cplusplus