Re: Why does disabling a struct's postblit increase its size in memory?

[Paul Backus via Digitalmars-d-learn]

On Saturday, 2 March 2024 at 19:29:47 UTC, Per Nordlöw wrote:
On Saturday, 2 March 2024 at 19:28:08 UTC, Per Nordlöw wrote:
On Saturday, 2 March 2024 at 19:11:42 UTC, kinke wrote:
Not according to run.dlang.io, for all available DMD 
versions. Perhaps your tested `S` was nested in some 
function/aggregate and so had an implicit context pointer.

Ahh. Yes. Indeed. My mistake. Thanks.

Thanks. Neither my websearches nor ChatGPT plus couldn't figure 
that out.

FYI, you can dump the layout of a struct, including hidden 
fields, by iterating over its `.tupleof` property:

```d
void main()
{
    struct S
    {
        @disable this(this);
        int n;
    }

    static foreach (field; S.tupleof)
        pragma(msg,
            typeof(field).stringof, " ",
            __traits(identifier, field), " ",
            "at ", field.offsetof
        );
}
```

This example prints out

```
int n at 0LU
void* this at 8LU
```