Move `posix_signal` declaration internal with prefix `ruby_`

1 files changed, 1 insertions, 1 deletions

diff --git a/signal.c b/signal.c
index 8dfeff9a50..dfa3ff5cca 100644
--- a/signal.c
+++ b/signal.c
@@ -628,7 +628,7 @@ ruby_signal(int signum, sighandler_t handler)
 }
 
 sighandler_t
-posix_signal(int signum, sighandler_t handler)
+ruby_posix_signal(int signum, sighandler_t handler)
 {
     return ruby_signal(signum, handler);
 }