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Date: Thu, 29 Jun 2017 15:54:07 +0300
From: Konstantin Belousov <kostikbel@gmail.com>
To: Dimitry Andric <dim@FreeBSD.org>
Cc: Justin Hibbits <jhibbits@FreeBSD.org>,
 FreeBSD Toolchain <freebsd-toolchain@freebsd.org>,
 FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: head -r320458 (e.g.) amd64 -> powerpc (32-bit) cross-buildworld
 fails for time libc++ static_asserts and overflow/underflow of long long
 (system clang/clang++ 4 based build)
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On Thu, Jun 29, 2017 at 12:47:10PM +0200, Dimitry Andric wrote:
> One nasty problem with this is that it is not possible to figure out at
> compile time what the size of time_t is.  You always need some sort of
> configure-time test, and an external define.

It is arguably possible, with constexpr.