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-rw-r--r--winsup/utils/getconf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/winsup/utils/getconf.c b/winsup/utils/getconf.c
index e6b319e21..256bddb1a 100644
--- a/winsup/utils/getconf.c
+++ b/winsup/utils/getconf.c
@@ -27,6 +27,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#define _XOPEN_SOURCE
#include <error.h>
#include <errno.h>
#include <limits.h>