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-rw-r--r--src/instance.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/instance.c b/src/instance.c
index b12a7d3..e9d4591 100644
--- a/src/instance.c
+++ b/src/instance.c
@@ -14,8 +14,6 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#define _XOPEN_SOURCE 500
-
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>