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-rw-r--r--src/signal/signal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/signal/signal.c b/src/signal/signal.c
index 373fddc5..eac3b650 100644
--- a/src/signal/signal.c
+++ b/src/signal/signal.c
@@ -1,4 +1,4 @@
-#if defined _POSIX_SOURCE
+#if defined _POSIX_SOURCE || defined _POSIX_C_SOURCE || defined _XOPEN_SOURCE
#include "sys/types.h"
#endif