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-rw-r--r--src/process/vfork.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/process/vfork.c b/src/process/vfork.c
index 16d07ea7..fc4adb46 100644
--- a/src/process/vfork.c
+++ b/src/process/vfork.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <unistd.h>
 #include "syscall.h"
 #include "libc.h"