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go/test/fixedbugs/issue29220.go
David Chase d924c3336c cmd/compile: prevent double-walk of switch for OPRINT/OPRINTN
When a println arg contains a call to an inlineable function
that itself contains a switch, that switch statement will be
walked twice, once by the walkexprlist formerly in the
OPRINT/OPRINTN case, then by walkexprlistcheap in walkprint.

Remove the first walkexprlist, it is not necessary.
walkexprlist =
		s[i] = walkexpr(s[i], init)
walkexprlistcheap = {
		s[i] = cheapexpr(n, init)
		s[i] = walkexpr(s[i], init)
}

Seems like this might be possible in other places, i.e.,
calls to inlineable switch-containing functions.

See also #25776.
Fixes #29220.

Change-Id: I3781e86aad6688711597b8bee9bc7ebd3af93601
Reviewed-on: https://go-review.googlesource.com/c/154497
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2018-12-17 22:49:21 +00:00

27 lines
556 B
Go

// compile
// Copyright 2018 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
func ascii(r rune) rune {
switch {
case 97 <= r && r <= 122:
return r - 32
case 65 <= r && r <= 90:
return r + 32
default:
return r
}
}
func main() {
nomeObjeto := "ABE1FK21"
println(string(nomeObjeto[1:4]))
println(ascii(rune(nomeObjeto[4])) >= 48 && ascii(rune(nomeObjeto[4])) <= 57)
println(string(nomeObjeto[5]))
println(string(nomeObjeto[6:10]))
}