issue52788.go

     1  // run
     2  
     3  // Copyright 2022 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Issue 52788: miscompilation for boolean comparison on ARM64.
     8  
     9  package main
    10  
    11  import (
    12  	"fmt"
    13  	"reflect"
    14  )
    15  
    16  func f(next func() bool) {
    17  	for b := next(); b; b = next() {
    18  		fmt.Printf("next() returned %v\n", b)
    19  	}
    20  }
    21  
    22  func main() {
    23  	next := reflect.MakeFunc(reflect.TypeOf((func() bool)(nil)), func(_ []reflect.Value) []reflect.Value {
    24  		return []reflect.Value{reflect.ValueOf(false)}
    25  	})
    26  	reflect.ValueOf(f).Call([]reflect.Value{next})
    27  }
    28
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