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-rw-r--r--mrbgems/mruby-binding-core/src/binding-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mrbgems/mruby-binding-core/src/binding-core.c b/mrbgems/mruby-binding-core/src/binding-core.c
index 7b70cfb78..5e104e720 100644
--- a/mrbgems/mruby-binding-core/src/binding-core.c
+++ b/mrbgems/mruby-binding-core/src/binding-core.c
@@ -151,6 +151,9 @@ binding_local_variable_set(mrb_state *mrb, mrb_value self)
mrb_value *e = binding_local_variable_search(mrb, proc, env, varname);
if (e) {
*e = obj;
+ if (!mrb_immediate_p(obj)) {
+ mrb_field_write_barrier(mrb, (struct RBasic*)env, (struct RBasic*)mrb_obj_ptr(obj));
+ }
}
else {
mrb_proc_merge_lvar(mrb, (mrb_irep*)proc->body.irep, env, 1, &varname, &obj);