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- // Copyright 2016 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
- // Using reflect to set a value was not seen by msan.
- /*
- #include <stdlib.h>
- extern void Go1(int*);
- extern void Go2(char*);
- // Use weak as a hack to permit defining a function even though we use export.
- void C1() __attribute__ ((weak));
- void C2() __attribute__ ((weak));
- void C1() {
- int i;
- Go1(&i);
- if (i != 42) {
- abort();
- }
- }
- void C2() {
- char a[2];
- a[1] = 42;
- Go2(a);
- if (a[0] != 42) {
- abort();
- }
- }
- */
- import "C"
- import (
- "reflect"
- "unsafe"
- )
- //export Go1
- func Go1(p *C.int) {
- reflect.ValueOf(p).Elem().Set(reflect.ValueOf(C.int(42)))
- }
- //export Go2
- func Go2(p *C.char) {
- a := (*[2]byte)(unsafe.Pointer(p))
- reflect.Copy(reflect.ValueOf(a[:1]), reflect.ValueOf(a[1:]))
- }
- func main() {
- C.C1()
- C.C2()
- }
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