Warn more duplicate literal hash keys

Following non-special_const literals:
* T_REGEXP

1 files changed, 2 insertions, 0 deletions

diff --git a/internal/re.h b/internal/re.h
index 28fa3fb51c..a19ad934f7 100644
--- a/internal/re.h
+++ b/internal/re.h
@@ -18,6 +18,8 @@ VALUE rb_reg_check_preprocess(VALUE);
 long rb_reg_search0(VALUE, VALUE, long, int, int);
 VALUE rb_reg_match_p(VALUE re, VALUE str, long pos);
 bool rb_reg_start_with_p(VALUE re, VALUE str);
+VALUE rb_reg_hash(VALUE re);
+VALUE rb_reg_equal(VALUE re1, VALUE re2);
 void rb_backref_set_string(VALUE string, long pos, long len);
 void rb_match_unbusy(VALUE);
 int rb_match_count(VALUE match);