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-rw-r--r--test/unistd/fork.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/unistd/fork.c b/test/unistd/fork.c
index 9c8285620..da4f2688d 100644
--- a/test/unistd/fork.c
+++ b/test/unistd/fork.c
@@ -25,6 +25,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <signal.h>
#include <sys/wait.h>
#define GOT1 (1 << 1)