On Sunday 14 June 2026 13:03:47 Kirill Makurin wrote:
> > - if (ret == 0 || ret > mb_cur_max || defaultCharacterUsed) {
> > + if (ret <= 0 || ret > mb_cur_max || defaultCharacterUsed) {
> > goto eilseq;
> > }
>
> Does WideCharToMultiByte ever return negative values? Microsoft docs only
> mention zero as return value on error.
It is not documented. But we know that valid values for ret should be (0,
mb_cur_max]
so it is better to explicitly reject any invalid ret value.
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