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-rw-r--r--test/signal/signal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/signal/signal.c b/test/signal/signal.c
index 97963ebda..3b282e870 100644
--- a/test/signal/signal.c
+++ b/test/signal/signal.c
@@ -23,6 +23,7 @@
*/
+#define _GNU_SOURCE
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>