Preserve the encoding of message from outer local variable

In the case of read-only but refering an unshareable object.

1 files changed, 1 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index 18725de5a4..8bf4db3c73 100644
--- a/vm.c
+++ b/vm.c
@@ -1037,7 +1037,7 @@ env_copy(const VALUE *src_ep, VALUE read_only_variables)
                     if (!rb_ractor_shareable_p(v)) {
                         rb_raise(rb_eRactorIsolationError,
                                  "can not make shareable Proc because it can refer unshareable object %"
-                                 PRIsVALUE" from variable `%s'", rb_inspect(v), rb_id2name(id));
+                                 "+" PRIsVALUE " from variable `%" PRIsVALUE "'", v, rb_id2str(id));
                     }
                     env_body[j] = v;
                     rb_ary_delete_at(read_only_variables, i);