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Mark backtrace referenced by exception #2917

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19 changes: 18 additions & 1 deletion src/gc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -514,10 +514,27 @@ gc_mark_children(mrb_state *mrb, struct RBasic *obj)

case MRB_TT_OBJECT:
case MRB_TT_DATA:
case MRB_TT_EXCEPTION:
mrb_gc_mark_iv(mrb, (struct RObject*)obj);
break;

case MRB_TT_EXCEPTION:
{
mrb_int i, ciidx;

mrb_gc_mark_iv(mrb, (struct RObject*)obj);

ciidx = mrb_fixnum(mrb_obj_iv_get(mrb, (struct RObject*)obj,
mrb_intern_lit(mrb, "ciidx")));
for (i = 0; i <= ciidx; i++) {
mrb_callinfo *ci = &mrb->c->cibase[i];
if (!ci->proc) {
continue;
}
mrb_gc_mark(mrb, (struct RBasic*)ci->proc);
}
}
break;

case MRB_TT_PROC:
{
struct RProc *p = (struct RProc*)obj;
Expand Down