switch in.Stack.Text() {
		case "else", "endif", "ifdef", "ifndef", "line":
			// Press on.
		default:
			return false
		}
	}
	switch in.Stack.Text() {
	case "define":
		in.define()
	case "else":
		in.else_()
	case "endif":
		in.endif()
	case "ifdef":
		in.ifdef(true)
	case "ifndef":
		in.ifdef(false)
	case "include":
		in.include()
	case "line":
		in.line()

var badLexTests = []badLexTest{
	{
		"3 #define foo bar\n",
		"'#' must be first item on line",
	},
	{
		"#ifdef foo\nhello",
		"unclosed #ifdef or #ifndef",
	},
	{
		"#ifndef foo\nhello",
		"unclosed #ifdef or #ifndef",
	},
	{
		"#ifdef foo\nhello\n#else\nbye",
		"unclosed #ifdef or #ifndef",
	},
	{
		"#define A() A()\nA()",
		"recursive macro invocation",
	},
	{

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package cgotest

/*
#include <windows.h>
USHORT backtrace(ULONG FramesToCapture, PVOID *BackTrace) {
#ifdef _AMD64_
	CONTEXT context;
	RtlCaptureContext(&context);
	ULONG64 ControlPc;
	ControlPc = context.Rip;
	int i;
	for (i = 0; i < FramesToCapture; i++) {
		PRUNTIME_FUNCTION FunctionEntry;
		ULONG64 ImageBase;

Input language:

The assembler uses mostly the same syntax for all architectures,
the main variation having to do with addressing modes. Input is
run through a simplified C preprocessor that implements #include,
#define, #ifdef/endif, but not #if or ##.

For more information, see https://golang.org/doc/asm.
*/

pkg syscall (darwin-386), const RTF_DONE = 64
pkg syscall (darwin-386), const RTF_DYNAMIC = 16
pkg syscall (darwin-386), const RTF_GATEWAY = 2
pkg syscall (darwin-386), const RTF_HOST = 4
pkg syscall (darwin-386), const RTF_IFREF = 67108864
pkg syscall (darwin-386), const RTF_IFSCOPE = 16777216
pkg syscall (darwin-386), const RTF_LLINFO = 1024
pkg syscall (darwin-386), const RTF_LOCAL = 2097152
pkg syscall (darwin-386), const RTF_MODIFIED = 32

pkg syscall (darwin-arm64), const RTF_GATEWAY ideal-int
pkg syscall (darwin-arm64), const RTF_HOST = 4
pkg syscall (darwin-arm64), const RTF_HOST ideal-int
pkg syscall (darwin-arm64), const RTF_IFREF = 67108864
pkg syscall (darwin-arm64), const RTF_IFREF ideal-int
pkg syscall (darwin-arm64), const RTF_IFSCOPE = 16777216
pkg syscall (darwin-arm64), const RTF_IFSCOPE ideal-int
pkg syscall (darwin-arm64), const RTF_LLINFO = 1024

pkg syscall (darwin-386), const RTF_DYNAMIC ideal-int
pkg syscall (darwin-386), const RTF_GATEWAY ideal-int
pkg syscall (darwin-386), const RTF_HOST ideal-int
pkg syscall (darwin-386), const RTF_IFREF ideal-int
pkg syscall (darwin-386), const RTF_IFSCOPE ideal-int
pkg syscall (darwin-386), const RTF_LLINFO ideal-int
pkg syscall (darwin-386), const RTF_LOCAL ideal-int

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#define issue20266 20266

#ifndef def20266
#error "expected def20266 to be defined"