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go/test/fixedbugs/issue26495.go

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// run
// 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.
// Issue 26495: gccgo produces incorrect order of evaluation
// for expressions involving &&, || subexpressions.
package main
var i int
func checkorder(order int) {
if i != order {
panic("FAIL: wrong evaluation order")
}
i++
}
func A() bool { checkorder(1); return true }
func B() bool { checkorder(2); return true }
func C() bool { checkorder(5); return false }
func D() bool { panic("FAIL: D should not be called") }
func E() int { checkorder(3); return 0 }
func F() int { checkorder(0); return 0 }
func G(bool) int { checkorder(9); return 0 }
func H(int, bool, int) int { checkorder(7); return 0 }
func I(int) bool { checkorder(8); return true }
func J() int { checkorder(4); return 0 }
func K() int { checkorder(6); return 0 }
func L() int { checkorder(10); return 0 }
func main() {
_ = F() + G(A() && B() && I(E()+H(J(), C() && D(), K()))) + L()
}