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https://github.com/golang/go
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test: explanatory comments [c-g]*
R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5656103
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test variadic functions and calls (dot-dot-dot).
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package main
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func sum(args ...int) int {
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify that illegal uses of ... are detected.
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// Does not compile.
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package main
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import "unsafe"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This file is compiled and then imported by ddd3.go.
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package ddd
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func Sum(args ...int) int {
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that variadic functions work across package boundaries.
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package main
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import "./ddd2"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Correct short declarations and redeclarations.
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// Test correct short declarations and redeclarations.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Incorrect short declarations and redeclarations.
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// Test that incorrect short declarations and redeclarations are detected.
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// Does not compile.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test defer.
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package main
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import "fmt"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that we can defer the predeclared functions print and println.
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package main
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func main() {
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defer println(42, true, false, true, 1.5, "world", (chan int)(nil), []int(nil), (map[string]int)(nil), (func())(nil), byte(255))
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defer println(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20)
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// defer panic("dead")
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// Disabled so the test doesn't crash but left here for reference.
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// defer panic("dead")
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defer print("printing: ")
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}
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// divide corner cases
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// Test divide corner cases.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that top-level parenthesized declarations can be empty.
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// Compiles but does not run.
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package P
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import ( )
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that the Go environment variables are present and accessible through
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// package os and package runtime.
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package main
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import (
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test a source file does not need a final newline.
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// Compiles but does not run.
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// No newline at the end of this file.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that a comment ending a source file does not need a final newline.
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// Compiles but does not run.
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package eof1
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// No newline at the end of this comment.
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package main
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// check for correct heap-moving of escaped variables.
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// it is hard to check for the allocations, but it is easy
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// Test for correct heap-moving of escaped variables.
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// It is hard to check for the allocations, but it is easy
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// to check that if you call the function twice at the
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// same stack level, the pointers returned should be
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// different.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test, using compiler diagnostic flags, that the escape analysis is working.
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// Compiles but does not run.
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package foo
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import (
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test run-time behavior of escape analysis-related optimizations.
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// Test the run-time behavior of escape analysis-related optimizations.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test floating-point literal syntax.
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package main
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var bad bool
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test floating-point comparison involving NaN.
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package main
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import "math"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test for loops.
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package main
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func assertequal(is, shouldbe int, msg string) {
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test simple functions.
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package main
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// does not compile and should not compile
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// Test that result parameters are in the same scope as regular parameters.
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// Does not compile.
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package main
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func f1(a int) (int, float32) { // BUG (not caught by compiler): multiple return values must have names
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func f1(a int) (int, float32) {
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return 7, 7.0
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}
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// $G $F.go || echo BUG: should compile
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// compile
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test function signatures.
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// Compiled but not run.
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package main
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type t1 int
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify that illegal function signatures are detected.
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// Does not compile.
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package main
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type t1 int
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify that it is illegal to take the address of a function.
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// Does not compile.
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package main
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var notmain func()
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test functions and goroutines.
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package main
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func caller(f func(int, int) int, a, b int, c chan int) {
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// compile
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// run
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test closures in if conditions.
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package main
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func main() {
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test evaluation order in if condition.
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package main
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var calledf = false
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test evaluation order.
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package main
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var calledf int
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Simple test of the garbage collector.
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package main
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import "runtime"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// A simple test of the garbage collector.
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package main
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func main() {
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Check that buffered channels are garbage collected properly.
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// Test that buffered channels are garbage collected properly.
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// An interesting case because they have finalizers and used to
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// have self loops that kept them from being collected.
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// (Cyclic data with finalizers is never finalized, nor collected.)
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that println can be the target of a go statement.
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package main
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import "time"
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify goto semantics.
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// Does not compile.
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//
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// Each test is in a separate function just so that if the
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// compiler stops processing after one error, we don't
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// lose other ones.
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