| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] static assertions in C++ |
| Date: | 2017-12-20 15:51:15 |
| Message-ID: | 12800.1513785075@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> writes:
> On 12/20/17 00:57, Tom Lane wrote:
>> I do not have a well-informed opinion on whether
>> #if defined(__cpp_static_assert) && __cpp_static_assert >= 200410
>> is an appropriate test for static_assert() being available, but I'm
>> pretty suspicious of it because none of my C++ compilers seem to
>> take that path, not even recent stuff like clang 9.0.0.
> For clang, you apparently need to pass -std=c++11 or higher. With g++
> >=6, that's the default.
Ah. I did try -std=c++0x on one machine, but forgot to do so with
the newer clang. That does seem to make it take the static_assert
path on recent macOS.
regards, tom lane
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