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-rw-r--r--enumerator.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/enumerator.c b/enumerator.c
index 66c126d..9e48fdd 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -2844,6 +2844,8 @@ InitVM_Enumerator(void)
/* ArithmeticSequence */
rb_cArithSeq = rb_define_class_under(rb_cEnumerator, "ArithmeticSequence", rb_cEnumerator);
+ rb_undef_alloc_func(rb_cArithSeq);
+ rb_undef_method(CLASS_OF(rb_cArithSeq), "new");
rb_define_method(rb_cArithSeq, "begin", arith_seq_begin, 0);
rb_define_method(rb_cArithSeq, "end", arith_seq_end, 0);
rb_define_method(rb_cArithSeq, "exclude_end?", arith_seq_exclude_end, 0);