Matthieu Moy <[email protected]> writes:

> This patch catches negative values before it's too late, i.e. before
> calling strtoul. We still silently accept very large integers that wrap
> to a valid "unsigned int".

Is the last statement correct?  A very large long uint that wrap to
uint would not fit in long uint and you would get ERANGE, no?

> So, here's a proper patch (I mean, a band-aid patch, but properly
> send ;-) ).

Yup.

> It should be merged before Kartik's series (or inserted at the start
> of the series) so that we get the fix before the test breakage.

Which one of his series?

>
>  git-compat-util.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/git-compat-util.h b/git-compat-util.h
> index f649e81..1df82fa 100644
> --- a/git-compat-util.h
> +++ b/git-compat-util.h
> @@ -814,6 +814,9 @@ static inline int strtoul_ui(char const *s, int base, 
> unsigned int *result)
>       char *p;
>  
>       errno = 0;
> +     /* negative values would be accepted by strtoul */
> +     if (strchr(s, '-'))
> +             return -1;
>       ul = strtoul(s, &p, base);
>       if (errno || *p || p == s || (unsigned int) ul != ul)
>               return -1;
--
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