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-rw-r--r--internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/internal.h b/internal.h
index 0539d49f5b..fb184e290c 100644
--- a/internal.h
+++ b/internal.h
@@ -1302,7 +1302,7 @@ VALUE rb_gvar_defined(struct rb_global_entry *);
/* array.c */
#ifndef ARRAY_DEBUG
-#define ARRAY_DEBUG 0
+#define ARRAY_DEBUG (0+RUBY_DEBUG)
#endif
#ifdef ARRAY_DEBUG