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-rw-r--r--mrbgems/mruby-struct/src/struct.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mrbgems/mruby-struct/src/struct.c b/mrbgems/mruby-struct/src/struct.c
index df76d7a33..e8f06b802 100644
--- a/mrbgems/mruby-struct/src/struct.c
+++ b/mrbgems/mruby-struct/src/struct.c
@@ -202,7 +202,7 @@ make_struct(mrb_state *mrb, mrb_value name, mrb_value members, struct RClass *kl
}
else {
/* old style: should we warn? */
- mrb_to_str(mrb, name);
+ mrb_ensure_string_type(mrb, name);
id = mrb_obj_to_sym(mrb, name);
if (!mrb_const_name_p(mrb, RSTRING_PTR(name), RSTRING_LEN(name))) {
mrb_name_error(mrb, id, "identifier %v needs to be constant", name);