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go/misc/cgo/test/test22906.go
Keith Randall 36aa2b036d cmd/cgo: make JNI's jobject type map to uintptr in Go
The jobject type is declared as a pointer, but some JVMs
(Dalvik, ART) store non-pointer values in them. In Go, we must
use uintptr instead of a real pointer for these types.

This is similar to the CoreFoundation types on Darwin which
were "fixed" in CL 66332.

Update #22906
Update #21897

RELNOTE=yes

Change-Id: I0d4c664501d89a696c2fb037c995503caabf8911
Reviewed-on: https://go-review.googlesource.com/81876
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-08 16:13:14 +00:00

75 lines
1.5 KiB
Go

// Copyright 2017 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.
// +build cgo
package cgotest
/*
// It's going to be hard to include a whole real JVM to test this.
// So we'll simulate a really easy JVM using just the parts we need.
// This is the relevant part of jni.h.
struct _jobject;
typedef struct _jobject *jobject;
typedef jobject jclass;
typedef jobject jthrowable;
typedef jobject jstring;
typedef jobject jarray;
typedef jarray jbooleanArray;
typedef jarray jbyteArray;
typedef jarray jcharArray;
typedef jarray jshortArray;
typedef jarray jintArray;
typedef jarray jlongArray;
typedef jarray jfloatArray;
typedef jarray jdoubleArray;
typedef jarray jobjectArray;
typedef jobject jweak;
// Note: jvalue is already a non-pointer type due to it being a C union.
*/
import "C"
import (
"testing"
)
func test22906(t *testing.T) {
var x1 C.jobject = 0 // Note: 0, not nil. That makes sure we use uintptr for these types.
_ = x1
var x2 C.jclass = 0
_ = x2
var x3 C.jthrowable = 0
_ = x3
var x4 C.jstring = 0
_ = x4
var x5 C.jarray = 0
_ = x5
var x6 C.jbooleanArray = 0
_ = x6
var x7 C.jbyteArray = 0
_ = x7
var x8 C.jcharArray = 0
_ = x8
var x9 C.jshortArray = 0
_ = x9
var x10 C.jintArray = 0
_ = x10
var x11 C.jlongArray = 0
_ = x11
var x12 C.jfloatArray = 0
_ = x12
var x13 C.jdoubleArray = 0
_ = x13
var x14 C.jobjectArray = 0
_ = x14
var x15 C.jweak = 0
_ = x15
}