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vim-patch:8.2.3064: Vim9: in script cannot set item in uninitialized list (#25605)

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Problem:    Vim9: in script cannot set item in uninitialized list.
Solution:   When a list is NULL allocate an empty one. (closes vim/vim#8461)

e65081d1b5

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-10-12 07:38:56 +08:00
committed by GitHub
parent f4c85b9ad1
commit 3cbb02ce77
3 changed files with 14 additions and 10 deletions
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14
src/nvim/eval.c
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@@ -1467,14 +1467,22 @@ char *get_lval(char *const name, typval_T *const rettv, lval_T *const lp, const
}
return NULL;
}
if (!(lp->ll_tv->v_type == VAR_LIST && lp->ll_tv->vval.v_list != NULL)
&& !(lp->ll_tv->v_type == VAR_DICT && lp->ll_tv->vval.v_dict != NULL)
&& !(lp->ll_tv->v_type == VAR_BLOB && lp->ll_tv->vval.v_blob != NULL)) {
if (lp->ll_tv->v_type != VAR_LIST
&& lp->ll_tv->v_type != VAR_DICT
&& lp->ll_tv->v_type != VAR_BLOB) {
if (!quiet) {
emsg(_("E689: Can only index a List, Dictionary or Blob"));
}
return NULL;
}
// a NULL list/blob works like an empty list/blob, allocate one now.
if (lp->ll_tv->v_type == VAR_LIST && lp->ll_tv->vval.v_list == NULL) {
tv_list_alloc_ret(lp->ll_tv, kListLenUnknown);
} else if (lp->ll_tv->v_type == VAR_BLOB && lp->ll_tv->vval.v_blob == NULL) {
tv_blob_alloc_ret(lp->ll_tv);
}
if (lp->ll_range) {
if (!quiet) {
emsg(_("E708: [:] must come last"));