http://d.puremagic.com/issues/show_bug.cgi?id=10544

           Summary: writeln!(inout(int)) does not work
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: andrei@erdani.com


--- Comment #0 from Andrei Alexandrescu <andrei@erdani.com> 2013-07-04 10:02:22 PDT ---
Refer to http://stackoverflow.com/questions/17460065/how-to-print-inout-parameters for details. In all likelihood Unqual is the culprit.

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull, rejects-valid


--- Comment #1 from Kenji Hara <k.hara.pg@gmail.com> 2013-07-07 23:31:47 PDT ---
https://github.com/D-Programming-Language/phobos/pull/1397

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--- Comment #2 from github-bugzilla@puremagic.com 2013-07-07 23:41:36 PDT ---
Commits pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/505ab39a1d22fa10cb11113c40406fd0271d0558
fix Issue 10544 - writeln!(inout(int)) does not work

https://github.com/D-Programming-Language/phobos/commit/ecadde6ffd50013485273954b62fb68e6da40c82 Merge pull request #1397 from 9rnsr/fix10544

Issue 10544 - writeln!(inout(int)) does not work

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gerleim <gerleim2@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gerleim2@gmail.com


--- Comment #3 from gerleim <gerleim2@gmail.com> 2013-07-08 03:19:54 PDT ---
Sorry if I am writing something silly, it's been a while ago I programed in D, it seems I skipped the whole inout thing.

Feel free to modify/delete my comment or create new issue as you see fit.

Isn't there a similar problem with Unsigned(T)? Something like

unittest
{
    alias Unsigned!(inout(int)) U4;
    static assert(is(U4 == inout(uint)));
}


What I get with Unqual (with the original writln issue) is that there is a
problem with Unqual!(Unsigned!T), while Unqual!(T) does compile.

In code:

module main;

import std.traits;

int main(string[] argv)
{
    const int x = 1;
    //TestCallGood(x);
    TestCallBad(x);
    return 0;
}

/*public void TestCallGood(int value)
{
    Foo(value);
}*/

public void TestCallBad(inout int value)
{
    Foo(value);
}

public void Foo(T)(T value)
{
    Unsigned!T z;    //Unsigned!(inout(int)) is used as a type

    Unqual!(Unsigned!T) vBad = value;    //template instance
Unqual!(__T4ImplTNgiZ) does not match template declaration Unqual(T)
    Unqual!(T) vGood = value;
}

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