https://issues.dlang.org/show_bug.cgi?id=22136

Paul Backus <snarwin+bugzilla@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |snarwin+bugzilla@gmail.com
            Summary|hashOf failed to compile    |[REG 2.097.1] hashOf failed
                   |because of different        |to compile because of
                   |inheritance order in DMD    |different inheritance order
                   |2.097.1                     |
           Severity|critical                    |regression

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https://issues.dlang.org/show_bug.cgi?id=22136

Tejas_Garhewal <scienticman@gmail.com> changed:

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

--- Comment #1 from Tejas_Garhewal <scienticman@gmail.com> ---
Seems to be a regression.

Works fine on dmd 2.097.0
(https://run.dlang.io/gist/cb1ed3bd5db4cf5b99e26454116b969a?args=-h)

Works fine on ldc2 1.25.0 (based on 2.095.1)

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https://issues.dlang.org/show_bug.cgi?id=22136

Eduard Staniloiu <edi33416@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |edi33416@gmail.com
           Assignee|nobody@puremagic.com        |edi33416@gmail.com

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https://issues.dlang.org/show_bug.cgi?id=22136

--- Comment #2 from Eduard Staniloiu <edi33416@gmail.com> ---
I did some digging on this, and the bug actually stems from the following issue

```
interface IObject
{
   size_t toHash() @trusted nothrow;
}

interface Dummy {}
interface Bug(E) : Dummy, IObject {}



                                   interface OK(E) : IObject, Dummy {}

static assert(is(immutable OK!string* : immutable IObject*))); // OK
static assert(is(immutable Bug!string* : immutable IObject*))); // fails
```

It appears that the order affects the is expression and
the `is(immutable T* : immutable U*)` check is done inside the `hashOf`
function.

I'm currently investigating this in dmd.

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https://issues.dlang.org/show_bug.cgi?id=22136

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull

--- Comment #3 from Dlang Bot <dlang-bot@dlang.rocks> ---
@edi33416 created dlang/dmd pull request #13404 "Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of d…" fixing this issue:

- Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of different inheritance order

https://github.com/dlang/dmd/pull/13404

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https://issues.dlang.org/show_bug.cgi?id=22136

Dlang Bot <dlang-bot@dlang.rocks> changed:

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

--- Comment #4 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #13404 "Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of d…" was merged into stable:

- 289394fab4695d3f601767ea004f9c1737880395 by Eduard Staniloiu:
  Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of different
inheritance order

https://github.com/dlang/dmd/pull/13404

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https://issues.dlang.org/show_bug.cgi?id=22136

--- Comment #5 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #13745 "Revert "Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of d…"" was merged into stable:

- 646fe4e97e1dae3e083ae461931f123f036bd4cf by Nathan Sashihara:
  Revert "Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of
different inheritance order (#13404)"

  This reverts commit 646ec178ffa13cf596026dae4217fdad27ad777c.

https://github.com/dlang/dmd/pull/13745

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https://issues.dlang.org/show_bug.cgi?id=22136

--- Comment #6 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #13785 "merge stable" was merged into master:

- da491b8ada5f557a222c369f7f1bb481ca10880e by Nathan Sashihara:
  Revert "Fix Issue 22136 - [REG 2.097.1] hashOf failed to compile because of
different inheritance order (#13404)" (#13745)

  This reverts commit 646ec178ffa13cf596026dae4217fdad27ad777c.

https://github.com/dlang/dmd/pull/13785

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