package main

import (
	"fmt"
	"os"
)

func main() {
	if len(os.Args) != 2 {
		fatal("usage: callback testname")
	}
	switch os.Args[1] {
	default:
		fatal("unknown test %q", os.Args[1])
	case "Call":
		testCall()
	case "Callback":
		testCallback()
	}
	println("OK")
}

func fatal(f string, args ...any) {
	fmt.Fprintln(os.Stderr, fmt.Sprintf(f, args...))
	os.Exit(1)
}

// Copyright 2011 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.

package main

import (
	"flag"
	"fmt"
	"go/build"
	"internal/testenv"
	"os"
	"path/filepath"
	"sort"
	"strings"
	"sync"
	"testing"
)

var flagCheck = flag.Bool("check", false, "run API checks")

func TestMain(m *testing.M) {
	flag.Parse()

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

// Parse input AST and prepare Prog structure.

package main

import (
	"fmt"
	"go/ast"
	"go/format"
	"go/parser"
	"go/scanner"
	"go/token"
	"os"
	"strings"
)

func parse(name string, src []byte, flags parser.Mode) *ast.File {

// Copyright 2009 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.

package bytes_test

import (
	. "bytes"
	"fmt"
	"internal/testenv"
	"io"
	"math/rand"
	"strconv"
	"testing"
	"unicode/utf8"
)

const N = 10000       // make this bigger for a larger (and slower) test
var testString string // test data for write tests

				t.Errorf("%s: len(Peek(%d)) = %v; want %v", tt.name, tt.peekSize, len(peekBuf), tt.peekSize)
				continue
			}
		}
		discarded, err := br.Discard(tt.n)
		if ge, we := fmt.Sprint(err), fmt.Sprint(tt.wantErr); discarded != tt.want || ge != we {
			t.Errorf("%s: Discard(%d) = (%v, %v); want (%v, %v)", tt.name, tt.n, discarded, ge, tt.want, we)
			continue
		}

	//
	// int
	// bridge_int_func(intFunc f)
	// {
	//		return f();
	// }
	//
	// int fortytwo()
	// {
	//	    return 42;
	// }
	import "C"
	import "fmt"

	func main() {
		f := C.intFunc(C.fortytwo)
		fmt.Println(int(C.bridge_int_func(f)))
		// Output: 42
	}

In C, a function argument written as a fixed size array
actually requires a pointer to the first element of the array.

pkg math/big, method (*Float) Copy(*Float) *Float
pkg math/big, method (*Float) Float32() (float32, Accuracy)
pkg math/big, method (*Float) Float64() (float64, Accuracy)
pkg math/big, method (*Float) Format(fmt.State, int32)
pkg math/big, method (*Float) Int(*Int) (*Int, Accuracy)
pkg math/big, method (*Float) Int64() (int64, Accuracy)
pkg math/big, method (*Float) IsInf() bool
pkg math/big, method (*Float) IsInt() bool

</p>

<pre>
type TimeZone int

const (
	EST TimeZone = -(5 + iota)
	CST
	MST
	PST
)

func (tz TimeZone) String() string {
	return fmt.Sprintf("GMT%+dh", tz)
}
</pre>


<h3 id="Variable_declarations">Variable declarations</h3>

<p>
A variable declaration creates one or more <a href="#Variables">variables</a>,

	use(buf[:])
}

var Used byte

func use(buf []byte) {
	for _, c := range buf {
		Used += c
	}
}

var splitTests = []func(){
	// Edit .+1,/^}/-1|seq 4 4 5000 | sed 's/.*/	stack&,/' | fmt
	stack4, stack8, stack12, stack16, stack20, stack24, stack28,
	stack32, stack36, stack40, stack44, stack48, stack52, stack56,
	stack60, stack64, stack68, stack72, stack76, stack80, stack84,

	out, err := cmd.Output()
	if err != nil {
		fmt.Println(strings.Join(cmd.Args, "\n"))
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
	return out
}

func check(err error) {
	if err != nil {
		fail(err.Error())
	}
}

func fail(msg string, v ...interface{}) {
	fmt.Fprintf(os.Stderr, msg, v...)
	fmt.Fprintln(os.Stderr)
	os.Exit(1)