fix incorrect GNU sighandler_t typedef

diff --git a/include/signal.h b/include/signal.h
index 6116fb4..2e621ac 100644 (file)
--- a/include/signal.h
+++ b/include/signal.h
@@ -100,7 +100,7 @@ void (*sigset(int, void (*)(int)))(int);
 #endif
 
 #ifdef _GNU_SOURCE
-typedef int (*sighandler_t)(int);
+typedef void (*sighandler_t)(int);
 void (*bsd_signal(int, void (*)(int)))(int);
 #endif