Andrew Dunstan <andrew@dunslane.net> writes:
> Well that seems to have crashed and burned badly. I'm just going to
> disable ecpg checks on this animal as suggested upthread.
Hmm ... this might be too much of a coincidence, but I can't help noticing
that the places that are going south with -D__USE_MINGW_ANSI_STDIO are
pretty nearly the same ones I just pointed to in
https://www.postgresql.org/message-id/21670.1526769114@sss.pgh.pa.us
as using "%lf". I'd supposed that that was mostly compulsive neatnik-ism,
but is it possible that mingw's "ansi stdio" library is actually
sensitive to that?
regards, tom lane