sys-libs/ncurses/files/ncurses-5.9-xopen-source.patch


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fix from upstream

https://bugs.gentoo.org/462116

--- a/include/curses.h.in
+++ b/include/curses.h.in
@@ -154,7 +154,7 @@ typedef unsigned @cf_cv_typeof_mmask_t@ mmask_t;
  * conflicting) when _XOPEN_SOURCE is 500 or greater.
  */
 #undef NCURSES_WIDECHAR
-#if defined(_XOPEN_SOURCE_EXTENDED) || defined(_XPG5)
+#if defined(_XOPEN_SOURCE_EXTENDED) || (defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE - 0 >= 500))
 #define NCURSES_WIDECHAR
 #endif