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cmd/compile: fix println()
println with no arguments accidentally doesn't print a newline. Introduced at CL 55097 Fixes #21808 Change-Id: I9fc7b4271b9b31e4c9b6078f055195dc3907b62c Reviewed-on: https://go-review.googlesource.com/62390 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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@ -2071,12 +2071,12 @@ func walkprint(nn *Node, init *Nodes) *Node {
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s := nn.List.Slice()
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t := make([]*Node, 0, len(s)*2)
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for i, n := range s {
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x := " "
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if len(s)-1 == i {
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x = "\n"
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t = append(t, n)
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if i != len(s)-1 {
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t = append(t, nodstr(" "))
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}
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t = append(t, n, nodstr(x))
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}
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t = append(t, nodstr("\n"))
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nn.List.Set(t)
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}
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17
test/fixedbugs/issue21808.go
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17
test/fixedbugs/issue21808.go
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@ -0,0 +1,17 @@
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// run
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// Copyright 2017 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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// Make sure println() prints a blank line.
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package main
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import "fmt"
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func main() {
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fmt.Println("A")
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println()
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fmt.Println("B")
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}
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3
test/fixedbugs/issue21808.out
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3
test/fixedbugs/issue21808.out
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@ -0,0 +1,3 @@
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A
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B
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