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// Copyright 2009 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.
//go:build cgo
package reflect_test
import (
. "reflect"
"runtime/cgo"
"testing"
"unsafe"
)
type nih struct {
_ cgo.Incomplete
x int
}
var global_nih = nih{x: 7}
func TestNotInHeapDeref(t *testing.T) {
// See issue 48399.
v := ValueOf((*nih)(nil))
v.Elem()
shouldPanic("reflect: call of reflect.Value.Field on zero Value", func() { v.Elem().Field(0) })
v = ValueOf(&global_nih)
if got := v.Elem().Field(1).Int(); got != 7 {
t.Fatalf("got %d, want 7", got)
}
v = ValueOf((*nih)(unsafe.Pointer(new(int))))
shouldPanic("reflect: reflect.Value.Elem on an invalid notinheap pointer", func() { v.Elem() })
shouldPanic("reflect: reflect.Value.Pointer on an invalid notinheap pointer", func() { v.Pointer() })
shouldPanic("reflect: reflect.Value.UnsafePointer on an invalid notinheap pointer", func() { v.UnsafePointer() })
}
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