Re: [HACKERS] taking stdbool.h into use

From: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>
Cc: pgsql-hackers(at)lists(dot)postgresql(dot)org, Michael Paquier <michael(at)paquier(dot)xyz>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>
Subject: Re: [HACKERS] taking stdbool.h into use
Date: 2018-03-23 02:17:29
Message-ID: 30536376-cb57-d233-12d4-a5d70d0349ce@2ndquadrant.com
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On 3/21/18 07:48, Peter Eisentraut wrote:
> On 3/21/18 01:51, Tom Lane wrote:
>> Andres Freund <andres(at)anarazel(dot)de> writes:
>>> On March 20, 2018 8:24:41 PM PDT, Michael Paquier <michael(at)paquier(dot)xyz> wrote:
>>>> Yeah, I agree with that. Just not using stdbool.h in those cases ought
>>>> to be fine. Any platforms where sizeof(bool) is 4 involves macos older
>>>> than 10.5 and Windows platforms using MSVC versions older than 2003
>>>> (didn't look further down either).
>>
>>> Aren't there some somewhat modern architectures where that's still the case, for performance reasons? PPC or such?
>>
>> Well, hydra (F16 on ppc64) has sizeof(bool) = 1. Don't have any other
>> good datapoints handy. Presumably we'd set up configure to report
>> what it found out, so it wouldn't take long to survey the buildfarm.
>
> I've pushed the configure tests. Let's see what they say.

So after a day, only the old macOS PowerPC systems have sizeof(bool) == 4.

I have committed the rest of this patch now.

Windows could use some manual adjustments in pg_config.h.win32 if anyone
cares. (That file also needs some more updates.)

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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