Re: Signed vs. Unsigned (some)

On 16.06.21 10:48, Peter Eisentraut wrote:
> On 15.06.21 10:17, Kyotaro Horiguchi wrote:
>> The definitions are not ((type) -1) but ((type) 0xFFFFFFFF) so
>> actually they might be different if we forget to widen the constant
>> when widening the types.  Regarding to the compiler behavior, I think
>> we are assuming C99[1] and C99 defines that -1 is converted to
>> Uxxx_MAX. (6.3.1.3 Singed and unsigned integers)
>>
>> I'm +0.2 on it.  It might be worthwhile as a matter of style.
> 
> I think since we have the constants we should use them.

I have pushed the InvalidBucket changes.

The use of InvalidBlockNumber with vac_update_relstats() looks a bit 
fishy to me.  We are using in the same call 0 as the default for 
num_all_visible_pages, and we generally elsewhere also use 0 as the 
starting value for relpages, so it's not clear to me why it should be -1 
or InvalidBlockNumber here.  I'd rather leave it "slightly wrong" for 
now so it can be checked again.