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vim-patch:8.2.2920: still a way to shadow a builtin function

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Problem:    Still a way to shadow a builtin function. (Yasuhiro Matsumoto)
Solution:   Check the key when using extend(). (issue vim/vim#8302)

6f1d2aa437

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq 2022-10-28 11:56:29 +08:00
parent 7683199a9b
commit 6b3db3f929
3 changed files with 24 additions and 5 deletions
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6
src/nvim/eval.c
View File

@ -1760,11 +1760,7 @@ void set_var_lval(lval_T *lp, char *endp, typval_T *rettv, int copy, const bool
semsg(_(e_dictkey), lp->ll_newkey);
return;
}
if ((lp->ll_tv->vval.v_dict == &globvardict
// || lp->ll_tv->vval.v_dict == &SCRIPT_ITEM(current_sctx.sc_sid)->sn_vars->sv_dict
)
&& (rettv->v_type == VAR_FUNC || rettv->v_type == VAR_PARTIAL)
&& var_wrong_func_name(lp->ll_newkey, true)) {
if (tv_dict_wrong_func_name(lp->ll_tv->vval.v_dict, rettv, lp->ll_newkey)) {
return;
}

18
src/nvim/eval/typval.c
View File

@ -2206,6 +2206,18 @@ bool tv_dict_get_callback(dict_T *const d, const char *const key, const ptrdiff_
return res;
}
/// Check for adding a function to g: or s:.
/// If the name is wrong give an error message and return true.
int tv_dict_wrong_func_name(dict_T *d, typval_T *tv, const char *name)
{
return (d == &globvardict
// || (SCRIPT_ID_VALID(current_sctx.sc_sid)
// && d == &SCRIPT_ITEM(current_sctx.sc_sid)->sn_vars->sv_dict)
)
&& (tv->v_type == VAR_FUNC || tv->v_type == VAR_PARTIAL)
&& var_wrong_func_name(name, true);
}
//{{{2 dict_add*
/// Add item to dictionary
@ -2217,6 +2229,9 @@ bool tv_dict_get_callback(dict_T *const d, const char *const key, const ptrdiff_
int tv_dict_add(dict_T *const d, dictitem_T *const item)
FUNC_ATTR_NONNULL_ALL
{
if (tv_dict_wrong_func_name(d, &item->di_tv, (const char *)item->di_key)) {
return FAIL;
}
return hash_add(&d->dv_hashtab, item->di_key);
}
@ -2477,6 +2492,9 @@ void tv_dict_extend(dict_T *const d1, dict_T *const d2, const char *const action
|| var_check_ro(di1->di_flags, arg_errmsg, arg_errmsg_len)) {
break;
}
if (tv_dict_wrong_func_name(d1, &di2->di_tv, (const char *)di2->di_key)) {
break;
}
if (watched) {
tv_copy(&di1->di_tv, &oldtv);

5
src/nvim/testdir/test_functions.vim
View File

@ -2488,6 +2488,11 @@ func Test_builtin_check()
call assert_fails('let g:.trim = {x -> " " .. x}', 'E704:')
call assert_fails('let s:["trim"] = {x -> " " .. x}', 'E704:')
call assert_fails('let s:.trim = {x -> " " .. x}', 'E704:')
call assert_fails('call extend(g:, #{foo: { -> "foo" }})', 'E704:')
let g:bar = 123
call extend(g:, #{bar: { -> "foo" }}, "keep")
call assert_fails('call extend(g:, #{bar: { -> "foo" }}, "force")', 'E704:')
endfunc