f.Name = make(map[string]*Name)
	f.NamePos = make(map[*Name]token.Pos)

	// In ast1, find the import "C" line and get any extra C preamble.
	sawC := false
	for _, decl := range ast1.Decls {
		switch decl := decl.(type) {
		case *ast.GenDecl:
			for _, spec := range decl.Specs {
				s, ok := spec.(*ast.ImportSpec)
				if !ok || s.Path.Value != `"C"` {
					continue
				}
				sawC = true
				if s.Name != nil {

	DECW DX                                 // 66ffca
	DECW R11                                // 6641ffcb
	DECL (BX)                               // ff0b
	DECL (R11)                              // 41ff0b
	DECL DX                                 // ffca
	DECL R11                                // 41ffcb
	DECQ (BX)                               // 48ff0b
	DECQ (R11)                              // 49ff0b

		return p.hasPointer(f, t.X, false)
	case *ast.FuncType, *ast.InterfaceType, *ast.MapType, *ast.ChanType:
		return true
	case *ast.Ident:
		// TODO: Handle types defined within function.
		for _, d := range p.Decl {
			gd, ok := d.(*ast.GenDecl)
			if !ok || gd.Tok != token.TYPE {
				continue
			}
			for _, spec := range gd.Specs {
				ts, ok := spec.(*ast.TypeSpec)
				if !ok {
					continue
				}

pkg go/ast, type CompositeLit struct, Rbrace token.Pos
pkg go/ast, type CompositeLit struct, Type Expr
pkg go/ast, type Decl interface, End() token.Pos
pkg go/ast, type Decl interface, Pos() token.Pos
pkg go/ast, type Decl interface, unexported methods
pkg go/ast, type DeclStmt struct
pkg go/ast, type DeclStmt struct, Decl Decl
pkg go/ast, type DeferStmt struct
pkg go/ast, type DeferStmt struct, Call *CallExpr