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-rw-r--r--pwd.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/pwd.h b/pwd.h
index 870d482..cb0b2d0 100644
--- a/pwd.h
+++ b/pwd.h
@@ -27,6 +27,11 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
+#if defined _XOPEN_SOURCE && _XOPEN_SOURCE - 1 < 0
+#undef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 400
+#endif
+
#if defined _XOPEN_SOURCE && !defined _POSIX_C_SOURCE
# if (_XOPEN_SOURCE >= 700)
# define _POSIX_C_SOURCE 200809L
@@ -35,6 +40,8 @@ SOFTWARE.
# elif (_XOPEN_SOURCE >= 500)
# define _POSIX_C_SOURCE 199506L
# else
+# undef _XOPEN_SOURCE
+# define _XOPEN_SOURCE 400
# define _POSIX_C_SOURCE 2
# endif
#endif