On Mon, Feb 15, 2016 at 11:23 PM, Jeff King <p...@peff.net> wrote:
> On Mon, Feb 15, 2016 at 11:22:12PM -0500, Eric Sunshine wrote:
>> On Mon, Feb 15, 2016 at 4:51 PM, Jeff King <p...@peff.net> wrote:
>> > - path = xmalloc((n+1)*sizeof(char *));
>> > + ALLOC_ARRAY(path, n+1);
>>
>> Elsewhere in this patch, you've reformatted "x+c" as "x + c"; perhaps
>> do so here, as well.
>
> Will do. I noticed while going over this before sending it out that it
> may also be technically possible for "n+1" to overflow here (and I think
> in a few other places in this patch). I don't know how paranoid we want
> to be.
Yes, I also noticed those and considered mentioning it. There was also
some multiplication which might be of concern.
ALLOC_ARRAY(graph->mapping, 2 * graph->column_capacity);
It would be easy enough to manually call st_add() and st_mult() for
those cases, but I haven't examined them closely enough to determine
how likely they would be to overflow, nor do I know if the resulting
noisiness of code is desirable.
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