https://issues.dlang.org/show_bug.cgi?id=23979

Dennis <dkorpel@live.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dkorpel@live.nl

--- Comment #1 from Dennis <dkorpel@live.nl> ---
The segfaults happens in:
```
ExpressionSemanticVisitor::visit(PtrExp*) (this=0x7fffffff69d8,
exp=0x7fffeb62d720) at src/dmd/expressionsem.d:7442
7442            Type tb = exp.e1.type.toBasetype();
(gdb) bt
#0  ExpressionSemanticVisitor::visit(PtrExp*) (this=0x7fffffff69d8,
exp=0x7fffeb62d720) at src/dmd/expressionsem.d:7442
#1  0x00005555559b66b6 in PtrExp::accept(Visitor*) (this=0x7fffeb62d720,
v=0x7fffffff69d8) at src/dmd/expression.d:5481
```

The PtrExp in question comes from this line:

source/mud/memory/smartpointers.d:179
```
assert(!__traits(compiles, *classPtr));
```

I'm looking into reducing it

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https://issues.dlang.org/show_bug.cgi?id=23979

--- Comment #2 from Dennis <dkorpel@live.nl> ---
Reduced to:
```D
class A {}

void h()
{
    const auto classPtr = SPtr.init;
    assert(!__traits(compiles, *classPtr));
}

struct SPtr
{
    A ptr() { return A.init; }
    alias ptr this;
}
```

--

https://issues.dlang.org/show_bug.cgi?id=23979

Dennis <dkorpel@live.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|2.104 segfaults             |ICE on failed alias this
                   |                            |attempt on pointer
                   |                            |expression
           Severity|major                       |regression

--

https://issues.dlang.org/show_bug.cgi?id=23979

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

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

--- Comment #3 from Dlang Bot <dlang-bot@dlang.rocks> ---
@dkorpel created dlang/dmd pull request #15300 "Fix 23979 - ICE on failed alias this attempt on pointer expression" fixing this issue:

- Fix 23979 - ICE on failed alias this attempt on pointer expression

https://github.com/dlang/dmd/pull/15300

--

https://issues.dlang.org/show_bug.cgi?id=23979

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 #15300 "Fix 23979 - ICE on failed alias this attempt on pointer expression" was merged into stable:

- 8e92e709dc1796c163fb979fa0a91783eeb8c902 by Dennis Korpel:
  Fix 23979 - ICE on failed alias this attempt on pointer expression

https://github.com/dlang/dmd/pull/15300

--

https://issues.dlang.org/show_bug.cgi?id=23979

--- Comment #5 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #15325 "merge stable" was merged into master:

- 5e1833a279a8a72f0de0532530cfad832d3ed980 by Dennis:
  Fix 23979 - ICE on failed alias this attempt on pointer expression (#15300)

https://github.com/dlang/dmd/pull/15325

--

https://issues.dlang.org/show_bug.cgi?id=23979

--- Comment #6 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #15310 "Merge stable" was merged into master:

- 5e1833a279a8a72f0de0532530cfad832d3ed980 by Dennis:
  Fix 23979 - ICE on failed alias this attempt on pointer expression (#15300)

https://github.com/dlang/dmd/pull/15310

--