case *ast.Expr:
		switch (*x).(type) {
		case *ast.SelectorExpr:
			f.saveRef(x, context)
		}
	case *ast.CallExpr:
		f.saveCall(x, context)
	}
}

// Save references to C.xxx for later processing.
func (f *File) saveRef(n *ast.Expr, context astContext) {
	sel := (*n).(*ast.SelectorExpr)
	// For now, assume that the only instance of capital C is when
	// used as the imported package identifier.

func (in *Input) macroName() string {
	// We use the Stack's input method; no macro processing at this stage.
	tok := in.Stack.Next()
	if tok != scanner.Ident {
		in.expectText("expected identifier after # directive")
	}
	// Name is alphanumeric by definition.
	return in.Stack.Text()
}

// #define processing.
func (in *Input) define() {
	name := in.macroName()
	args, tokens := in.macroDefinition(name)

to a type, a function, a constant, or a global variable. Cgo must
decide which.

The obvious thing for cgo to do is to process the preamble, expanding
#includes and processing the corresponding C code. That would require
a full C parser and type checker that was also aware of any extensions
known to the system compiler (for example, all the GNU C extensions) as

		// See golang.org/issue/6563.
		pos := (*r.Expr).Pos()
		if x, ok := expr.(*ast.Ident); ok {
			expr = &ast.Ident{NamePos: pos, Name: x.Name}
		}

		// Change AST, because some later processing depends on it,
		// and also because -godefs mode still prints the AST.
		old := *r.Expr
		*r.Expr = expr

		// Record source-level edit for cgo output.
		if !r.Done {

	}
	return paxHdrs, nil
}

// readHeader reads the next block header and assumes that the underlying reader
// is already aligned to a block boundary. It returns the raw block of the
// header in case further processing is required.
//
// The err will be set to io.EOF only when one of the following occurs:
//   - Exactly 0 bytes are read and EOF is hit.
//   - Exactly 1 block of zeros is read and EOF is hit.

// returned by a Split function to indicate that the scanning should stop
// with no error. If the token being delivered with this error is not nil,
// the token is the last token.
//
// The value is useful to stop processing early or when it is necessary to
// deliver a final empty token (which is different from a nil token).
// One could achieve the same behavior with a custom error value but
// providing one here is tidier.

pkg syscall (windows-386), type ProcessInformation struct
pkg syscall (windows-386), type ProcessInformation struct, Process Handle
pkg syscall (windows-386), type ProcessInformation struct, ProcessId uint32
pkg syscall (windows-386), type ProcessInformation struct, Thread Handle
pkg syscall (windows-386), type ProcessInformation struct, ThreadId uint32
pkg syscall (windows-386), type Protoent struct

		return fmt.Errorf("xcrun simctl launch booted %q: %v", bundleID, err)
	}
	var processID int
	var ignore string
	if _, err := fmt.Sscanf(string(out), "%s %d", &ignore, &processID); err != nil {
		return fmt.Errorf("runSimulator: couldn't find processID from `simctl launch`: %v (%q)", err, out)
	}
	_, err = runLLDB("ios-simulator", appdir, strconv.Itoa(processID), args)
	return err
}

pkg syscall (windows-386), type ProcessEntry32 struct, ParentProcessID uint32
pkg syscall (windows-386), type ProcessEntry32 struct, PriClassBase int32
pkg syscall (windows-386), type ProcessEntry32 struct, ProcessID uint32
pkg syscall (windows-386), type ProcessEntry32 struct, Size uint32
pkg syscall (windows-386), type ProcessEntry32 struct, Threads uint32
pkg syscall (windows-386), type ProcessEntry32 struct, Usage uint32

pkg net/http, func ServeTLS(net.Listener, Handler, string, string) error
pkg net/http, method (*Server) RegisterOnShutdown(func())
pkg net/http, method (*Server) ServeTLS(net.Listener, string, string) error
pkg net/http/fcgi, func ProcessEnv(*http.Request) map[string]string
pkg net/http/httptest, method (*Server) Certificate() *x509.Certificate
pkg net/http/httptest, method (*Server) Client() *http.Client
pkg reflect, func MakeMapWithSize(Type, int) Value