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-rw-r--r--mrbgems/mruby-fiber/src/fiber.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mrbgems/mruby-fiber/src/fiber.c b/mrbgems/mruby-fiber/src/fiber.c
index 8a6146dbe..0a6d92f67 100644
--- a/mrbgems/mruby-fiber/src/fiber.c
+++ b/mrbgems/mruby-fiber/src/fiber.c
@@ -125,6 +125,7 @@ fiber_init(mrb_state *mrb, mrb_value self)
ci = c->ci;
ci->target_class = p->target_class;
ci->proc = p;
+ mrb_field_write_barrier(mrb, (struct RBasic*)mrb_obj_ptr(self), (struct RBasic*)p);
ci->pc = p->body.irep->iseq;
ci->nregs = p->body.irep->nregs;
ci[1] = ci[0];