1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index e7daf76997..8345788f9f 100644
--- a/eval.c
+++ b/eval.c
@@ -2754,7 +2754,7 @@ class_prefix(self, cpath)
 
 NORETURN(static void return_jump _((VALUE)));
 NORETURN(static void break_jump _((VALUE)));
-NORETURN(static void unknown_node _((NODE *)));
+NORETURN(static void unknown_node _((NODE * volatile)));
 
 static void
 unknown_node(node)