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-rw-r--r--linux-user/signal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 6a81b11cd1..5ed1d8532e 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -21,6 +21,7 @@
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
+#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <sys/ucontext.h>