mirror of
https://github.com/golang/go
synced 2024-09-29 20:14:29 -06:00
8f1e2d4ef7
If we run 'go test ./...' in the misc module, we don't want to see errors for these standalone files. We could instead add +ignore tags to each file individually, but this is exactly what a testdata directory is for. Updates #30228 Change-Id: I7047ad888dd6aff701f5982d58b6a79f6a487c58 Reviewed-on: https://go-review.googlesource.com/c/163417 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Jay Conrod <jayconrod@google.com>
58 lines
904 B
Go
58 lines
904 B
Go
// 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()
|
|
}
|