Bug 14331 – Cannot cast(void*) a class with an alias this struct

This code: class Test { struct Foo { int a, b, c; } Foo foo; alias foo this; } void main() { auto test = new Test(); destroy(test); } Fails to compile with the following message: $ rdmd test.d c:\D\dmd2\windows\bin\..\..\src\druntime\import\object.di(523): Error: cannot cast from Foo to void* test.d(13): Error: template instance object.destroy!(Test) error instantiating Failed: ["dmd", "-v", "-o-", "test.d", "-I."] Presumably because the `cast(void*)` is trying to cast the struct that is aliased instead of the class. Removing the `alias foo this` causes the code to compile. Using version 2.066.1 at the moment, but I didn't see anything related in the changelog for v2.067.

cat > bug.d << CODE class Test { static struct S {} S s; alias s this; } void main() { auto p = cast(void*)(new Test); } CODE dmd -c bug ---- bug2.d(11): Error: cannot cast expression (new Test).s of type S to void* ---- It is a more general problem that you cannot cast the class to void*.

*** This issue has been marked as a duplicate of issue 6777 ***