I was surprised to see this in phobos master:

make -f posix.mak unittest

This passes. So do these:

make -f posix.mak BUILD=debug unittest
make -f posix.mak BUILD=release unittest

Now, this also passes:

make -f posix.mak BUILD=debug std/algorithm/sorting.test

But this fails in std/algorithm/sorting.d line 2266!

make -f posix.mak BUILD=release std/algorithm/sorting.test

I'll investigate this. Any insight is welcome!


Thanks,

Andrei

On Friday, 12 August 2016 at 18:45:54 UTC, Andrei Alexandrescu wrote:
> I was surprised to see this in phobos master:
>
> make -f posix.mak unittest
>
> This passes. So do these:
>
> make -f posix.mak BUILD=debug unittest
> make -f posix.mak BUILD=release unittest
>
> Now, this also passes:
>
> make -f posix.mak BUILD=debug std/algorithm/sorting.test
>
> But this fails in std/algorithm/sorting.d line 2266!
>
> make -f posix.mak BUILD=release std/algorithm/sorting.test
>
> I'll investigate this. Any insight is welcome!
>
>
> Thanks,
>
> Andrei

That is known as well ;-)

std.algorithm.sorting fails in the individual test due to entropy behaving weird in std.math:

A couple of pointers:

- https://github.com/dlang/phobos/pull/4587 (recognizes this problem and ignores std.algorithm.sorting from Travis)
- https://github.com/dlang/phobos/pull/4719 (switches back to just run test_runner)

On Friday, 12 August 2016 at 18:57:37 UTC, Seb wrote:
> On Friday, 12 August 2016 at 18:45:54 UTC, Andrei Alexandrescu wrote:
>> I was surprised to see this in phobos master:
>>
>> make -f posix.mak unittest
>>
>> This passes. So do these:
>>
>> make -f posix.mak BUILD=debug unittest
>> make -f posix.mak BUILD=release unittest
>>
>> Now, this also passes:
>>
>> make -f posix.mak BUILD=debug std/algorithm/sorting.test
>>
>> But this fails in std/algorithm/sorting.d line 2266!
>>
>> make -f posix.mak BUILD=release std/algorithm/sorting.test
>>
>> I'll investigate this. Any insight is welcome!
>>
>>
>> Thanks,
>>
>> Andrei
>
> That is known as well ;-)
>
> std.algorithm.sorting fails in the individual test due to entropy behaving weird in std.math:
>
> A couple of pointers:
>
> - https://github.com/dlang/phobos/pull/4587 (recognizes this problem and ignores std.algorithm.sorting from Travis)
> - https://github.com/dlang/phobos/pull/4719 (switches back to just run test_runner)

I answered to quickly:

1) entropy is in std.numeric, not std.math
2) the issue has been reported a month ago - https://issues.dlang.org/show_bug.cgi?id=16227
3) #4587 just found a workaround of 16227 for std.numeric, not for its caller

Maybe related: https://issues.dlang.org/show_bug.cgi?id=16204