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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107745] long double constexprs don't work with * or /, but work with + and - (JUST ON PPC)
Date: Tue, 20 Feb 2024 15:26:51 +0000 [thread overview]
Message-ID: <bug-107745-4-e6NPcfNywc@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-107745-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107745
--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Sebastian "spaetz" Spaeth from comment #5)
> I fully understand that nobody wants to invest time into fixing this. What
> would be nice though, is if this were really just a missed optimization and
> not rejecting to compile valid code.
It's not that no-one wants to fix the bug, it's just that no-one wants it fixed
enough to hire someone to do it .. and it's too much work for "spare time
hacking".
While ibm-128 is being phased out in favour of ieee754 - it is still used on a
number of systems that are current and will be for a few more GCC releases.
Given the increase in use of constexpr, it's likely to become more common to
see issues.
In the past, I worked around the problem by making conditional non-constexpr
code (so _not_ ignoring constexpr, but having a #ifdef'd alternate path.)
next prev parent reply other threads:[~2024-02-20 15:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 8:50 [Bug c++/107745] New: " Sebastian at SSpaeth dot de
2022-11-18 9:00 ` [Bug c++/107745] " schwab@linux-m68k.org
2022-11-18 9:07 ` Sebastian at SSpaeth dot de
2022-11-18 9:14 ` pinskia at gcc dot gnu.org
2022-11-18 9:19 ` jakub at gcc dot gnu.org
2022-11-18 9:36 ` Sebastian at SSpaeth dot de
2024-02-20 15:14 ` xry111 at gcc dot gnu.org
2024-02-20 15:26 ` iains at gcc dot gnu.org [this message]
2024-02-20 17:19 ` redi at gcc dot gnu.org
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