Patch by Elvis Pranskevichus.

Patch by Elvis Pranskevichus.

Patch by Elvis Pranskevichus.

Patch by Justin Mayfield.

Some built-in coroutine-like objects might not have __name__ or
__qualname__. A good example of such are 'asend', 'aclose' and
'athrow' coroutine methods of asynchronous generators.

Every opcode should end with DISPATCH() or goto error.

Every opcode should end with DISPATCH() or goto error.