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go/test/func8.go
Russ Cox ee9bfb023a gc: fix order of evaluation
Pulling function calls out to happen before the
expression being evaluated was causing illegal
reorderings even without inlining; with inlining
it got worse.  This CL adds a separate ordering pass
to move things with a fixed order out of expressions
and into the statement sequence, where they will
not be reordered by walk.

Replaces lvd's CL 5534079.

Fixes #2740.

R=lvd
CC=golang-dev
https://golang.org/cl/5569062
2012-01-25 17:53:50 -05:00

48 lines
643 B
Go

// $G $D/$F.go && $L $F.$A && ./$A.out
// 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
var calledf int
func f() int {
calledf++
return 0
}
func g() int {
return calledf
}
var xy string
func x() bool {
for false {
} // no inlining
xy += "x"
return false
}
func y() string {
for false {
} // no inlining
xy += "y"
return "abc"
}
func main() {
if f() == g() {
println("wrong f,g order")
}
if x() == (y() == "abc") {
panic("wrong compare")
}
if xy != "xy" {
println("wrong x,y order")
}
}