http://d.puremagic.com/issues/show_bug.cgi?id=11125

           Summary: UFCS instantiation of template causes template
                    constraint to be skipped
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: andrej.mitrovich@gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-09-25 12:55:29 PDT ---
-----
import std.traits;

template filter(alias predfun)
    if (is(ReturnType!predfun == bool))
{
    static assert(is(ReturnType!predfun == bool));
    auto filter(Range)(Range r) { }
}

void main()
{

    filter!((int a) => a + 1)([1]);  // fails in constraint
    [1].filter!((int a) => a + 1);   // fails internally in static assert!
}
-----

The bug seems to be fixed in 2.064 git-head, but I can't recall if I've seen it filed as a bug. Is this a duplicate? We should make sure this test-case gets added if the bug wasn't fixed on purpose.

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic, pull


--- Comment #1 from Kenji Hara <k.hara.pg@gmail.com> 2013-09-25 19:50:48 PDT ---
(In reply to comment #0)
> The bug seems to be fixed in 2.064 git-head, but I can't recall if I've seen it filed as a bug. Is this a duplicate? We should make sure this test-case gets added if the bug wasn't fixed on purpose.

As far as I know, duplicated issue had not filed in bugzilla.

But, from bisecting, I found the bug was fixed in the PR. https://github.com/D-Programming-Language/dmd/pull/2337

In there, I had also intended *normalizing* the evaluation order of template instantiations. So I can say that the bugfix was _half_ intended.

To complete the fix, I opened a PR for adding a test case. https://github.com/D-Programming-Language/dmd/pull/2589

Thank you.

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--- Comment #2 from Kenji Hara <k.hara.pg@gmail.com> 2013-09-25 19:52:14 PDT ---
(In reply to comment #1)
> But, from bisecting, I found the bug was fixed in the PR. https://github.com/D-Programming-Language/dmd/pull/2337

Sorry I pasted incorrect URL. Correct is: https://github.com/D-Programming-Language/dmd/pull/1660

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--- Comment #3 from github-bugzilla@puremagic.com 2013-09-26 22:23:49 PDT ---
Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/818448500d7e015816b19f391985e1fb72947acc
fix Issue 11125 - UFCS instantiation of template causes template constraint to
be skipped

Additionally improve lambda formatting in error messages

https://github.com/D-Programming-Language/dmd/commit/5e692dac924ad485c0365a067f8a53790caebc6f Merge pull request #2589 from 9rnsr/fix11125

Issue 11125 - UFCS instantiation of template causes template constraint to be skipped

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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