You can control whether you want data-formatters on "class Foo" to also match 
"class Foo *" and "class Foo &" using the --skip-pointers and --skip-references 
options respectively.
So this part is clearly is by design.

As for what the formatter gets passed, your formatter has chosen to see values 
that are pointers to the type by not passing --skip-pointers, so it makes sense 
to pass it 
the pointer - which it after all asked for.  I can't see a strong enough 
argument either way to want to change the way it currently works, since we 
might break other people's uses of it.

Jim



> On Jul 19, 2021, at 5:12 PM, Vadim Chugunov via lldb-dev 
> <lldb-dev@lists.llvm.org> wrote:
> 
> Hi,
> I am observing that if I bind a synthetic provider to MyType, it will also be 
> instantiated for MyType*, MyType**, etc, and the object passed into the 
> constructor will be of the pointer type.    I'd have expected the synthetic 
> to either not be instantiated for pointers, or to be constructed on the 
> pointee object directly.
> 
> Is this a bug or done this way on purpose?   
> 
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> lldb-dev mailing list
> lldb-dev@lists.llvm.org
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