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-rw-r--r--src/sysdeps/tryppoll.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/sysdeps/tryppoll.c b/src/sysdeps/tryppoll.c
index 33380b8..1502f2c 100644
--- a/src/sysdeps/tryppoll.c
+++ b/src/sysdeps/tryppoll.c
@@ -1,6 +1,9 @@
/* ISC license. */
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
+
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>