On Wednesday, April 4, 2018 at 5:28:25 AM UTC+2, John H Palmieri wrote:
>
>
>
> On Tuesday, April 3, 2018 at 2:09:17 PM UTC-7, François Bissey wrote:
>>
>>
>>
>> > On 4/04/2018, at 02:34, John H Palmieri <jhpalm...@gmail.com> wrote:
>> >
>> >
>> >
>> > On Monday, April 2, 2018 at 9:25:56 PM UTC-7, François Bissey wrote:
>> >
>> >
>> > > On 2/04/2018, at 16:27, John H Palmieri <jhpalm...@gmail.com> wrote:
>> > >
>> > >
>> > >
>> > > On Sunday, April 1, 2018 at 1:16:57 PM UTC-7, François Bissey wrote:
>> > >
>> > >
>> > > > On 2/04/2018, at 03:48, John H Palmieri <jhpalm...@gmail.com>
>> wrote:
>> > > >
>> > > >
>> > > >
>> > > > On Sunday, April 1, 2018 at 2:06:37 AM UTC-7, Volker Braun wrote:
>> > > > On Sunday, April 1, 2018 at 9:01:17 AM UTC+2, Dima Pasechnik wrote:
>> > > > - when I do an incremental upgrade, I do not see these failures.
>> > > > - when I do 'make distclean; make ptestlong', I see them (with
>> > > > 8.2.beta8 or later; I haven't checked earlier versions).
>> > > >
>> > > > Is it the other way round? Surely it should work with "make
>> distclean; make ptestlong"?
>> > > >
>> > > >
>> > > > It is not the other way around: failures when building from
>> scratch, no failures when upgrading.
>> > > >
>> > >
>> > > I (painfully) checked on my old laptop and I get this stuff when
>> > > building from scratch too. So we have some kind of new
>> mis-compilation
>> > > with clang.
>> > >
>> > > François
>> > >
>> > > You made a guess in email that it was Singular. Suggestions for how
>> to test this?
>> > >
>> >
>> > Based on the libraries apparently involved. But looking at the chain of
>> > calls, i would be more inlined to suspect something in sage itself.
>> Either
>> > in the glue to singular or in the coercion framework.
>> > But that’s speculative, I have no real ideas. Does anyone know if that
>> breaks
>> > 8.1 as well? If not, we may be able to bisect something.
>> >
>> > François
>> >
>> > I just tried with 8.1, and all tests pass. That builds with gcc, not
>> clang, so it's a big difference.
>>
>> Forgot about that! So the earliest we can test is 8.2.beta5.
>>
>> François
>>
>>
> 8.2.beta5 doesn't build without #24704 ("ppl build fails with
> clang-5.0"), in case that provides any clues. WIth #24704, I get the same
> doctest errors.
>
Oh, clang 5.0 is tricky. I did have trouble with it on #22679 (porting to
FreeBSD), this is by the way how the patch from #24704 arose.
>
> --
> John
>
>
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