[jhc] [BUG] A pointer used by program is sweeped by GC

Hi, jhc hackers. A team member, mzp, found following error while developing Ajhc. A pointer used by program is sweeped by GC · Issue #51 · ajhc/ajhc https://github.com/ajhc/ajhc/issues/51 I think the error occurs also on jhc. But I do not understand jgc's GC root policy, then can't fix it. Someone has any idea to fix it? Best regards, -- Kiwamu Okabe