diff options
Diffstat (limited to 'src/class.c')
| -rw-r--r-- | src/class.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/class.c b/src/class.c index b1c7513de..b8d3d31d8 100644 --- a/src/class.c +++ b/src/class.c @@ -1885,7 +1885,8 @@ mrb_mod_to_s(mrb_state *mrb, mrb_value klass) return mrb_str_cat_lit(mrb, str, ">"); } else { - return class_name_str(mrb, mrb_class_ptr(klass)); + mrb_value str = class_name_str(mrb, mrb_class_ptr(klass)); + return mrb_frozen_p(mrb_basic_ptr(str)) ? mrb_str_dup(mrb, str) : str; } } |