Clear `env` before top-level execution; fix
MODIFY
src/vm.c
src/vm.c
@@ -2834,6 +2834,7 @@ mrb_top_run(mrb_state *mrb, struct RProc *proc, mrb_value self, unsigned int sta
return mrb_vm_run(mrb, proc, self, stack_keep);
}
if (mrb->c->ci == mrb->c->cibase) {
+ mrb->c->ci->env = NULL;
return mrb_vm_run(mrb, proc, self, stack_keep);
}
ci = cipush(mrb);

Clear `env` before top-level execution; fix #4581