On Wed, Aug 16, 2017 at 11:20 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Don't know how far back you need to go to find Windows machines
> with 4-byte bool, but we have some pretty long-in-the-tooth
> buildfarm critters in that lineage, too.
From VS 2003 and upwards the size has always been 1:
https://msdn.microsoft.com/en-us/library/s3f49ktz.aspx
So this gives some margin as the buildfarm uses VS 2008 and newer versions.
--
Michael