[Issue 10666] New: Regresion (2.064 git-head, 2.053+): Appender does not work with a RefCounted type

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10666

           Summary: Regresion (2.064 git-head, 2.053+): Appender does not
                    work with a RefCounted type
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrej.mitrovich at gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2013-07-18 06:59:59 PDT ---
-----
import std.array;
import std.typecons;

struct T { }

struct S
{
    RefCounted!T data;
}

void main()
{
    Appender!(S[]) arr;
    arr.put(S());
}
-----

2.064:
$ dmd test.d
> C:\dmd-git\dmd2\windows\bin\..\..\src\phobos\std\array.d(2287): Error: variable std.array.Appender!(S[]).Appender.put!(S).put.item has scoped destruction, cannot build closure

However there is another bug in earlier releases:

2.063:
$ dmd test.d
$ test.exe

On win32 this crashes with a dialog box:

-----
[Window Title]
test.exe

[Main Instruction]
test.exe has stopped working

[Content]
A problem caused the program to stop working correctly. Please close the
program.

[Close the program] [Debug the program]
-----

I've traced down the first version that crashes:

2.053:
> Crash

Earlier releases simply have an assertion failure:

2.052:
> core.exception.AssertError at std.typecons(2351): Assertion failure

The code which failed there is:

-----
assert(RefCounted._store._count > 0);
-----

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