On Tue, 12 Nov 2024, sisyphus wrote:
(Otherwise the gmp configure step decides that vsnprintf does not work, and
an mpfr library built against the resultant gmp library exhibits some buggy
behaviour.)
The intent is that those stdio functions would be working correctly enough
in general on UCRT, that's why __USE_MINGW_ANSI_STDIO isn't enabled
implicitly there.
(The main known issue is around long doubles, which are rare in practice.)
Can you dig into why gmp thinks that vsnprintf doesn't work in this case,
and why mpfr behaves buggily in that case? That's the main contructive
way forward here, I think.
// Martin
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