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-rw-r--r--src/class.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/class.c b/src/class.c
index 745e0a72c..9803e7662 100644
--- a/src/class.c
+++ b/src/class.c
@@ -72,6 +72,7 @@ mrb_class_name_class(mrb_state *mrb, struct RClass *outer, struct RClass *c, mrb
}
return;
}
+ name = mrb_str_dup(mrb, name);
mrb_str_cat_cstr(mrb, name, "::");
mrb_str_cat_cstr(mrb, name, mrb_sym_name(mrb, id));
}