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-rw-r--r--libguile/feature.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libguile/feature.h b/libguile/feature.h
index 8ba59891b..90f9008af 100644
--- a/libguile/feature.h
+++ b/libguile/feature.h
@@ -50,7 +50,7 @@
#include "libguile/__scm.h"
#define SCM_HOOKP(x) (SCM_NIMP(x) && (SCM_TYP16 (x) == scm_tc16_hook))
-#define SCM_HOOK_ARITY(hook) (SCM_CAR (hook) >> 16)
+#define SCM_HOOK_ARITY(hook) (SCM_CARW (hook) >> 16)
#define SCM_HOOK_NAME(hook) SCM_CADR (hook)
#define SCM_HOOK_PROCEDURES(hook) SCM_CDDR (hook)
#define SCM_SET_HOOK_PROCEDURES(hook, procs) SCM_SETCDR (SCM_CDR (hook), procs)