Re: [PATCH 13/14] git-compat-util.h: fix integer overflow on IL32P64 systems

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Marat Radchenko <marat@xxxxxxxxxxxxxxxx> writes:

> On Wed, Oct 08, 2014 at 01:02:10PM -0700, Junio C Hamano wrote:
>> Junio C Hamano <gitster@xxxxxxxxx> writes:
>> 
>> > Marat Radchenko <marat@xxxxxxxxxxxxxxxx> writes:
>> >
>> >> Signed-off-by: Marat Radchenko <marat@xxxxxxxxxxxxxxxx>
>> >> ---
>> >>  git-compat-util.h | 2 +-
>> >>  1 file changed, 1 insertion(+), 1 deletion(-)
>> >>
>> >> diff --git a/git-compat-util.h b/git-compat-util.h
>> >> index b338277..101c9d7 100644
>> >> --- a/git-compat-util.h
>> >> +++ b/git-compat-util.h
>> >> @@ -474,7 +474,7 @@ extern int git_munmap(void *start, size_t length);
>> >>  #endif
>> >>  
>> >>  #define DEFAULT_PACKED_GIT_LIMIT \
>> >> -	((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
>> >> +	((size_t)(1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
>> >
>> > 1024 * 1024 * 8192 overflows 32-bit unsigned, but is size_t always
>> > large enough?  Just checking.
>> 
>> Heh, I was being silly.  This gives the default value for a variable
>> whose type is size_t, so it would better fit.  So please throw 13 in
>> the list of changes I found sensible in the other message.
>
> Is it an Acked-by?

Not really.  It just shows that the change needs to be explained
well in the proposed log message.
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