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fix(coverity): error handling CHECKED_RETURN #31618

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CID 516406:  Error handling issues  (CHECKED_RETURN)
    /src/nvim/api/vimscript.c: 284 in nvim_call_dict_function()
    278       Object rv = OBJECT_INIT;
    279
    280       typval_T rettv;
    281       bool mustfree = false;
    282       switch (dict.type) {
    283       case kObjectTypeString:
    >>>     CID 516406:  Error handling issues  (CHECKED_RETURN)
    >>>     Calling "eval0" without checking return value (as is done elsewhere 10 out of 12 times).
    284         TRY_WRAP(err, {
    285           eval0(dict.data.string.data, &rettv, NULL, &EVALARG_EVALUATE);
    286           clear_evalarg(&EVALARG_EVALUATE, NULL);
    287         });
    288         if (ERROR_SET(err)) {
    289           return rv;
This commit is contained in:
Justin M. Keyes 2024-12-18 06:05:37 -08:00 committed by GitHub
parent 738320188f
commit f9eb68f340
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GPG Key ID: B5690EEEBB952194
1 changed files with 12 additions and 8 deletions
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20
src/nvim/api/vimscript.c
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@ -229,10 +229,9 @@ static Object _call_function(String fn, Array args, dict_T *self, Arena *arena,
funcexe.fe_selfdict = self;
TRY_WRAP(err, {
// call_func() retval is deceptive, ignore it. Instead we set `msg_list`
// (see above) to capture abort-causing non-exception errors.
call_func(fn.data, (int)fn.size, &rettv, (int)args.size,
vim_args, &funcexe);
// call_func() retval is deceptive, ignore it. Instead TRY_WRAP sets `msg_list` to capture
// abort-causing non-exception errors.
(void)call_func(fn.data, (int)fn.size, &rettv, (int)args.size, vim_args, &funcexe);
});
if (!ERROR_SET(err)) {
@ -280,18 +279,23 @@ Object nvim_call_dict_function(Object dict, String fn, Array args, Arena *arena,
typval_T rettv;
bool mustfree = false;
switch (dict.type) {
case kObjectTypeString:
case kObjectTypeString: {
int eval_ret;
TRY_WRAP(err, {
eval0(dict.data.string.data, &rettv, NULL, &EVALARG_EVALUATE);
clear_evalarg(&EVALARG_EVALUATE, NULL);
});
eval_ret = eval0(dict.data.string.data, &rettv, NULL, &EVALARG_EVALUATE);
clear_evalarg(&EVALARG_EVALUATE, NULL);
});
if (ERROR_SET(err)) {
return rv;
}
if (eval_ret != OK) {
abort(); // Should not happen.
}
// Evaluation of the string arg created a new dict or increased the
// refcount of a dict. Not necessary for a RPC dict.
mustfree = true;
break;
}
case kObjectTypeDict:
object_to_vim(dict, &rettv, err);
break;