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vim-patch:8.2.4632: using freed memory in flatten()

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Problem:    Using freed memory in flatten().
Solution:   Clear typval after recursing into list.

f3980dc5d0

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2023-02-24 15:33:51 +08:00
parent ec25572367
commit c76dfe14b1
1 changed files with 1 additions and 1 deletions
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2
src/nvim/eval/typval.c
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@ -682,13 +682,13 @@ void tv_list_flatten(list_T *list, listitem_T *first, long maxitems, long maxdep
tv_list_drop_items(list, item, item); tv_list_drop_items(list, item, item);
tv_list_extend(list, itemlist, next); tv_list_extend(list, itemlist, next);
tv_clear(&item->li_tv);
if (maxdepth > 0) { if (maxdepth > 0) {
tv_list_flatten(list, tv_list_flatten(list,
item->li_prev == NULL ? list->lv_first : item->li_prev->li_next, item->li_prev == NULL ? list->lv_first : item->li_prev->li_next,
itemlist->lv_len, maxdepth - 1); itemlist->lv_len, maxdepth - 1);
} }
tv_clear(&item->li_tv);
xfree(item); xfree(item);
} }