https://issues.dlang.org/show_bug.cgi?id=16618

--- Comment #1 from changlon <changlon@gmail.com> ---
for v2.072.0-b2

```sh
struct embed(T) {
                T embed_instance ;
    @property payload() {
                return embed_instance ;
        }
}
class Bufferz {
        alias owner this ;
                Buffer* _owner ;
auto owner() {
                return _owner ;
        }

}

struct Buffer {
                alias range this ;
                embed!Bufferz _range ;
                auto range() {
                        return _range.payload ;
                }
                ref slice() {
Slice;
                }
        pragma(inline)
{
        }

}
```

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https://issues.dlang.org/show_bug.cgi?id=16618

ag0aep6g@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice
                 CC|                            |ag0aep6g@gmail.com
           Severity|regression                  |normal

--- Comment #2 from ag0aep6g@gmail.com ---
(In reply to changlon from comment #1)

Reduced/simplified further:

----
class Bufferz
{
    alias owner this;
    Buffer owner() { return Buffer.init; }
}

struct Buffer
{
    alias range this;
    Bufferz range() { return Bufferz.init; }
    void slice() { error; }
}
----

You marked this as a regression, but you didn't specify which previous version of dmd doesn't have the problem. For a bug to be a regression, the code must have worked at some point. Downgrading to "normal".

--

https://issues.dlang.org/show_bug.cgi?id=16618

Ketmar Dark <ketmar@ketmar.no-ip.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ketmar@ketmar.no-ip.org

--

https://issues.dlang.org/show_bug.cgi?id=16618

Vladimir Panteleev <dlang-bugzilla@thecybershadow.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86                         |All
            Summary|Segmentation fault: 11      |[REG2.055] Segmentation
                   |                            |fault in DMD with cyclic
                   |                            |alias this and unknown
                   |                            |identifier

--

https://issues.dlang.org/show_bug.cgi?id=16618

RazvanN <razvan.nitu1305@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |razvan.nitu1305@gmail.com
         Resolution|---                         |FIXED

--- Comment #3 from RazvanN <razvan.nitu1305@gmail.com> ---
Compiling this with dmd 2.081 issues:

Error: undefined identifier embed_instance

and no seg fault. Closing as fixed

--