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Commit de48d95c authored by Yukihiro "Matz" Matsumoto's avatar Yukihiro "Matz" Matsumoto
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Avoid marking possibly freed stack; #3550 #3612

parent c53747db
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Showing with 5 additions and 2 deletions
src/gc.c
View file @ de48d95c
......@@ -648,8 +648,11 @@ gc_mark_children(mrb_state *mrb, mrb_gc *gc, struct RBasic *obj)
struct REnv *e = (struct REnv*)obj;
mrb_int i, len;
if (MRB_ENV_STACK_SHARED_P(e) && e->cxt.c->fib) {
mrb_gc_mark(mrb, (struct RBasic*)e->cxt.c->fib);
if (MRB_ENV_STACK_SHARED_P(e)) {
if (e->cxt.c->fib) {
mrb_gc_mark(mrb, (struct RBasic*)e->cxt.c->fib);
}
break;
}
len = MRB_ENV_STACK_LEN(e);
for (i=0; i<len; i++) {
......
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