Fix Issue 21812 - __traits(allMembers) on types with value tuples return ghost members

[BorisCarvajal]

Another side effect is that -vcg-ast will output:

S!(int, float)
{
    struct S
    {
        (int, float) args;
    }
}

instead of:

S!(int, float)
{
    struct S
    {
        (int, float) args;
        int __args_field_0;
        float __args_field_1;
    }
}

which looks more correctly I think.

[BorisCarvajal]

@dlang-bot is sleeping, I'm force pushing.

[dlang-bot]

Thanks for your pull request, @BorisCarvajal!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	21812	normal	__traits(allMembers) on types with value tuples return ghost members

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub run digger -- build "master + dmd#12406"