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-rw-r--r--src/unistd/usleep.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/unistd/usleep.c b/src/unistd/usleep.c
index ce1c8144..6c966526 100644
--- a/src/unistd/usleep.c
+++ b/src/unistd/usleep.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
#include <unistd.h>
#include <time.h>