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From: Jelte Fennema-Nio <[email protected]>
To: Peter Eisentraut <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Thomas Munro <[email protected]>
Cc: Andres Freund <[email protected]>
Subject: Re: Make copyObject work in C++
Date: Tue, 31 Mar 2026 11:09:59 +0200
Message-ID: <CAGECzQRauVYN19Y-DTiCTCkdNabh+ZqhdaLrUHR6CAU4wm2TFQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CAGECzQR21OnnKiZO_1rLWO0-16kg1JBxnVq-wymYW0-_1cUNtg@mail.gmail.com>
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On Tue, 31 Mar 2026 at 10:33, Peter Eisentraut <[email protected]> wrote:
> Hmm, note that C++ is also used for LLVM/JIT, and by requiring this
> additional feature set we are also imposing new requirements for those
> users.  This has not been fully explored, and I hesitate to add such a
> new requirement at the last moment.

I understand the hesitation, but in practice we already impose those
requirements anyway for non-MSVC compilers because test_cplusplusext
doesn't compile without it. So any compiler that would cause problems
with the new featureset would have already complained about that
before.

> But how about this: We add the feature test that you propose and enable
> the extension based on that.  See attached patch.  This reduces to
> essentially a three-line patch, much simpler than all previous proposals.

If you're still worried, then this sounds like a fine middle-ground
for now. I think we should reconsider adding the automatic /std:c++20
flag for the PG20 dev cycle though.

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  Subject: Re: Make copyObject work in C++
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