// Not supported.
	case *ast.FuncType:
		return &Type{Size: p.PtrSize, Align: p.PtrSize, C: c("void*")}
	case *ast.InterfaceType:
		return &Type{Size: 2 * p.PtrSize, Align: p.PtrSize, C: c("GoInterface")}
	case *ast.MapType:
		return &Type{Size: p.PtrSize, Align: p.PtrSize, C: c("GoMap")}
	case *ast.ChanType:
		return &Type{Size: p.PtrSize, Align: p.PtrSize, C: c("GoChan")}
	case *ast.Ident:

		}
	}

	if p.tok == '\n' {
		p.next()
		// collect associated methods
		for p.tok == scanner.Ident {
			p.expectKeyword("func")
			if p.tok == '/' {
				// Skip a /*nointerface*/ or /*asm ID */ comment.
				p.expect('/')
				p.expect('*')
				if p.expect(scanner.Ident) == "asm" {
					p.parseUnquotedString()
				}
				p.expect('*')
				p.expect('/')
			}
			p.expect('(')

	Offset int64
}

const (
	fieldIsDDD = 1 << iota // field is ... argument
	fieldNointerface
)

func (f *Field) IsDDD() bool       { return f.flags&fieldIsDDD != 0 }
func (f *Field) Nointerface() bool { return f.flags&fieldNointerface != 0 }

func (f *Field) SetIsDDD(b bool)       { f.flags.set(fieldIsDDD, b) }
func (f *Field) SetNointerface(b bool) { f.flags.set(fieldNointerface, b) }