Should not mark red (i.e. ROM allocated) objects.

015f06ed · Yukihiro "Matz" Matsumoto · 95169097 · 015f06ed
Unverified Commit 015f06ed authored Jun 16, 2020 by Yukihiro "Matz" Matsumoto
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src/gc.c src/gc.c +1 -0

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--- a/src/gc.c
+++ b/src/gc.c
@@ -772,6 +772,7 @@ mrb_gc_mark(mrb_state *mrb, struct RBasic *obj)
 {
  if (obj == 0) return;
  if (!is_white(obj)) return;
+  if (is_red(obj)) return;
  mrb_assert((obj)->tt != MRB_TT_FREE);
  add_gray_list(mrb, &mrb->gc, obj);
 }