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gc.c (mrb_gc_register): protect obj from GC during execution

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Because `mrb_ary_new()` and `mrb_ary_push()` can cause GC; fix #6317
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Yukihiro "Matz" Matsumoto
2024-08-02 04:50:00 +09:00
parent 16fe4b2701
commit 3324773f56
1 changed files with 3 additions and 0 deletions
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src/gc.c
+3
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@@ -418,11 +418,14 @@ mrb_gc_register(mrb_state *mrb, mrb_value obj)
if (mrb_immediate_p(obj)) return;
table = mrb_gv_get(mrb, GC_ROOT_SYM);
int ai = mrb_gc_arena_save(mrb);
mrb_gc_protect(mrb, obj);
if (mrb_nil_p(table) || !mrb_array_p(table)) {
table = mrb_ary_new(mrb);
mrb_gv_set(mrb, GC_ROOT_SYM, table);
}
mrb_ary_push(mrb, table, obj);
mrb_gc_arena_restore(mrb, ai);
}
/* mrb_gc_unregister() removes the object from GC root. */