Re: [PATCH v2 0/2] Brown-bag fix on top of js/mingw-inherit-only-std-handles

> On Nov 30 2019, Johannes Sixt wrote:
>
>> Am 30.11.19 um 19:04 schrieb Junio C Hamano:
>>> "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
>>> writes:
>>> 
>>>>  * We now assign errno only when the call to CreateProcessW() failed.
>>> 
>>> Meaning the global variable 'errno' is left as it was (instead of
>>> getting cleared) when a system call succeeds?  That I think is the
>>> correct behaviour people who use the variable expect.
>>
>> I hope you mean people who read the code. You cannot possibly mean
>> developers who expect that the run-command API keeps errno unchanged if
>> the calls were successful. I'm pretty sure they do not provide such a
>> guarantee.
>
> POSIX guarantees that no library function sets errno to zero.