https://issues.dlang.org/show_bug.cgi?id=22498

Tomáš Chaloupka <chalucha@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|critical                    |normal

--- Comment #1 from Tomáš Chaloupka <chalucha@gmail.com> ---
I've found possible workaround.

```
auto ref unwrap(EX)(auto ref EX res) {
    static if (__traits(isRef, res)) {
        printf("unwrap(ref)\n");
        return res.get();
    } else {
        printf("unwrap(val)\n");
        auto ret = res.get().move(); // < NRVO
        return ret;
    }
}
```

Then with `Foo f = gen(42).unwrap;`

It otputs:
```
~this(0)
~this(0)
~this(0)
unwrap(val)
~this(0)
~this(42)
```

But I'm still puzzled about what's wrong with the original one.

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https://issues.dlang.org/show_bug.cgi?id=22498

Sebastiaan Koppe <mail@skoppe.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mail@skoppe.eu

--- Comment #2 from Sebastiaan Koppe <mail@skoppe.eu> ---
As have I commented on the newsgroup https://forum.dlang.org/post/zckdpsukzafedikiuaci@forum.dlang.org

"
It doesn't copy. It just destructs the same object twice... Ouch.

Change the destructor to ~this() { printf("~this(%d)\n", n); n = 12; } and
you'll see.
"

--

https://issues.dlang.org/show_bug.cgi?id=22498

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P1                          |P3

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https://issues.dlang.org/show_bug.cgi?id=22498

--- Comment #3 from dlangBugzillaToGithub <robert.schadek@posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/dmd/issues/20006

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB

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