ws++
				}
			}
			if ws == 0 {
				continue
			}
			d.Specs = d.Specs[0:ws]
			ast2.Decls[w] = d
			w++
		}
		ast2.Decls = ast2.Decls[0:w]
	} else {
		for _, decl := range ast2.Decls {
			d, ok := decl.(*ast.GenDecl)
			if !ok {
				continue
			}
			for _, spec := range d.Specs {
				if s, ok := spec.(*ast.ImportSpec); ok && s.Path.Value == `"C"` {

	// use "T" as the mangling of C.whatever,
	// except in the definition (handled at end of function).
	refName := make(map[*ast.Expr]*Name)
	for _, r := range f.Ref {
		refName[r.Expr] = r.Name
	}
	for _, d := range f.AST.Decls {
		d, ok := d.(*ast.GenDecl)
		if !ok || d.Tok != token.TYPE {
			continue
		}
		for _, s := range d.Specs {
			s := s.(*ast.TypeSpec)
			n := refName[&s.Type]
			if n != nil && n.Mangle != "" {

pkg go/ast, type FieldList struct, List []*Field
pkg go/ast, type FieldList struct, Opening token.Pos
pkg go/ast, type File struct
pkg go/ast, type File struct, Comments []*CommentGroup
pkg go/ast, type File struct, Decls []Decl
pkg go/ast, type File struct, Doc *CommentGroup
pkg go/ast, type File struct, Imports []*ImportSpec
pkg go/ast, type File struct, Name *Ident
pkg go/ast, type File struct, Package token.Pos