Re: [HACKERS] taking stdbool.h into use
Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>, Andres Freund <andres@anarazel.de>
Cc: pgsql-hackers@lists.postgresql.org, Michael Paquier
<michael@paquier.xyz>, Alvaro Herrera <alvherre@alvh.no-ip.org>,
Thomas Munro <thomas.munro@enterprisedb.com>
Date: 2018-03-23T02:17:29Z
Lists: pgsql-hackers
On 3/21/18 07:48, Peter Eisentraut wrote: > On 3/21/18 01:51, Tom Lane wrote: >> Andres Freund <andres@anarazel.de> writes: >>> On March 20, 2018 8:24:41 PM PDT, Michael Paquier <michael@paquier.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
Commits
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Use stdbool.h if suitable
- 9a95a77d9d5d 11.0 landed
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Add configure tests for stdbool.h and sizeof bool
- f20b3285340c 11.0 landed
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Remove useless use of bit-masking macros
- d91da5ecedc8 11.0 landed
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Change various Gin*Is* macros to return 0/1.
- af4472bcb88a 9.6.0 cited
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Fix several possibly non-portable gaffs in record_image_ops.
- 4cbb646334b3 9.4.0 cited