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-rw-r--r--include/ruby/ruby.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 7fe38a0f1d..34f2c69152 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -1133,7 +1133,7 @@ struct RBignum {
(FL_TAINT | FL_UNTRUSTED); \
} while (0)
-#define OBJ_FROZEN(x) (!!FL_TEST((x), FL_FREEZE))
+#define OBJ_FROZEN(x) (!!(FL_ABLE(x)?(RBASIC(x)->flags&(FL_FREEZE)):FLONUM_P(x)))
#define OBJ_FREEZE(x) FL_SET((x), FL_FREEZE)
#if SIZEOF_INT < SIZEOF_LONG