1 files changed, 580 insertions, 0 deletions
diff --git a/misc/cgo/test/testx.go b/misc/cgo/test/testx.go
new file mode 100644
index 0000000..8ec84a8
--- /dev/null
+++ b/misc/cgo/test/testx.go
@@ -0,0 +1,580 @@
+// Copyright 2011 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.
+
+// Test cases for cgo.
+// Both the import "C" prologue and the main file are sorted by issue number.
+// This file contains //export directives on Go functions
+// and so it must NOT contain C definitions (only declarations).
+// See test.go for C definitions.
+
+package cgotest
+
+import (
+	"runtime"
+	"runtime/cgo"
+	"runtime/debug"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+	"unsafe"
+)
+
+/*
+// threads
+extern void doAdd(int, int);
+
+// issue 1328
+void IntoC(void);
+
+// issue 1560
+// mysleep returns the absolute start time in ms.
+long long mysleep(int seconds);
+
+// twoSleep returns the absolute start time of the first sleep
+// in ms.
+long long twoSleep(int);
+
+// issue 3775
+void lockOSThreadC(void);
+int usleep(unsigned usec);
+
+// issue 4054 part 2 - part 1 in test.go
+typedef enum {
+	A = 0,
+	B,
+	C,
+	D,
+	E,
+	F,
+	G,
+	H,
+	II,
+	J,
+} issue4054b;
+
+// issue 5548
+
+extern int issue5548_in_c(void);
+
+// issue 6833
+
+extern unsigned long long issue6833Func(unsigned int, unsigned long long);
+
+// issue 6907
+
+extern int CheckIssue6907C(_GoString_);
+
+// issue 7665
+
+extern void f7665(void);
+
+// issue 7978
+// Stack tracing didn't work during cgo code after calling a Go
+// callback.  Make sure GC works and the stack trace is correct.
+
+#include <stdint.h>
+
+// use ugly atomic variable sync since that doesn't require calling back into
+// Go code or OS dependencies
+void issue7978c(uint32_t *sync);
+
+// issue 8331 part 2 - part 1 in test.go
+// A typedef of an unnamed struct is the same struct when
+// #include'd twice.  No runtime test; just make sure it compiles.
+#include "issue8331.h"
+
+// issue 8945
+
+typedef void (*PFunc8945)();
+extern PFunc8945 func8945; // definition is in test.go
+
+// issue 20910
+void callMulti(void);
+
+// issue 28772 part 2 - part 1 in issuex.go
+#define issue28772Constant2 2
+
+
+// issue 31891
+typedef struct {
+	long obj;
+} Issue31891A;
+
+typedef struct {
+	long obj;
+} Issue31891B;
+
+void callIssue31891(void);
+
+typedef struct {
+	int i;
+} Issue38408, *PIssue38408;
+
+extern void cfunc49633(void*); // definition is in test.go
+*/
+import "C"
+
+// exports
+
+//export ReturnIntLong
+func ReturnIntLong() (int, C.long) {
+	return 1, 2
+}
+
+//export gc
+func gc() {
+	runtime.GC()
+}
+
+// threads
+
+var sum struct {
+	sync.Mutex
+	i int
+}
+
+//export Add
+func Add(x int) {
+	defer func() {
+		recover()
+	}()
+	sum.Lock()
+	sum.i += x
+	sum.Unlock()
+	var p *int
+	*p = 2
+}
+
+func testCthread(t *testing.T) {
+	if (runtime.GOOS == "darwin" || runtime.GOOS == "ios") && runtime.GOARCH == "arm64" {
+		t.Skip("the iOS exec wrapper is unable to properly handle the panic from Add")
+	}
+	sum.i = 0
+	C.doAdd(10, 6)
+
+	want := 10 * (10 - 1) / 2 * 6
+	if sum.i != want {
+		t.Fatalf("sum=%d, want %d", sum.i, want)
+	}
+}
+
+// issue 1328
+
+//export BackIntoGo
+func BackIntoGo() {
+	x := 1
+
+	for i := 0; i < 10000; i++ {
+		xvariadic(x)
+		if x != 1 {
+			panic("x is not 1?")
+		}
+	}
+}
+
+func xvariadic(x ...interface{}) {
+}
+
+func test1328(t *testing.T) {
+	C.IntoC()
+}
+
+// issue 1560
+
+var sleepDone = make(chan int64)
+
+// parallelSleep returns the absolute difference between the start time
+// of the two sleeps.
+func parallelSleep(n int) int64 {
+	t := int64(C.twoSleep(C.int(n))) - <-sleepDone
+	if t < 0 {
+		return -t
+	}
+	return t
+}
+
+//export BackgroundSleep
+func BackgroundSleep(n int32) {
+	go func() {
+		sleepDone <- int64(C.mysleep(C.int(n)))
+	}()
+}
+
+func testParallelSleep(t *testing.T) {
+	sleepSec := 1
+	dt := time.Duration(parallelSleep(sleepSec)) * time.Millisecond
+	t.Logf("difference in start time for two sleep(%d) is %v", sleepSec, dt)
+	// bug used to run sleeps in serial, producing a 2*sleepSec-second delay.
+	// we detect if the start times of those sleeps are > 0.5*sleepSec-second.
+	if dt >= time.Duration(sleepSec)*time.Second/2 {
+		t.Fatalf("parallel %d-second sleeps slept for %f seconds", sleepSec, dt.Seconds())
+	}
+}
+
+// issue 2462
+
+//export exportbyte
+func exportbyte() byte {
+	return 0
+}
+
+//export exportbool
+func exportbool() bool {
+	return false
+}
+
+//export exportrune
+func exportrune() rune {
+	return 0
+}
+
+//export exporterror
+func exporterror() error {
+	return nil
+}
+
+//export exportint
+func exportint() int {
+	return 0
+}
+
+//export exportuint
+func exportuint() uint {
+	return 0
+}
+
+//export exportuintptr
+func exportuintptr() uintptr {
+	return (uintptr)(0)
+}
+
+//export exportint8
+func exportint8() int8 {
+	return 0
+}
+
+//export exportuint8
+func exportuint8() uint8 {
+	return 0
+}
+
+//export exportint16
+func exportint16() int16 {
+	return 0
+}
+
+//export exportuint16
+func exportuint16() uint16 {
+	return 0
+}
+
+//export exportint32
+func exportint32() int32 {
+	return 0
+}
+
+//export exportuint32
+func exportuint32() uint32 {
+	return 0
+}
+
+//export exportint64
+func exportint64() int64 {
+	return 0
+}
+
+//export exportuint64
+func exportuint64() uint64 {
+	return 0
+}
+
+//export exportfloat32
+func exportfloat32() float32 {
+	return 0
+}
+
+//export exportfloat64
+func exportfloat64() float64 {
+	return 0
+}
+
+//export exportcomplex64
+func exportcomplex64() complex64 {
+	return 0
+}
+
+//export exportcomplex128
+func exportcomplex128() complex128 {
+	return 0
+}
+
+// issue 3741
+
+//export exportSliceIn
+func exportSliceIn(s []byte) bool {
+	return len(s) == cap(s)
+}
+
+//export exportSliceOut
+func exportSliceOut() []byte {
+	return []byte{1}
+}
+
+//export exportSliceInOut
+func exportSliceInOut(s []byte) []byte {
+	return s
+}
+
+// issue 3775
+
+func init() {
+	if runtime.GOOS == "android" {
+		return
+	}
+	// Same as test3775 but run during init so that
+	// there are two levels of internal runtime lock
+	// (1 for init, 1 for cgo).
+	// This would have been broken by CL 11663043.
+	C.lockOSThreadC()
+}
+
+func test3775(t *testing.T) {
+	if runtime.GOOS == "android" {
+		return
+	}
+	// Used to panic because of the UnlockOSThread below.
+	C.lockOSThreadC()
+}
+
+//export lockOSThreadCallback
+func lockOSThreadCallback() {
+	runtime.LockOSThread()
+	runtime.UnlockOSThread()
+	go C.usleep(10000)
+	runtime.Gosched()
+}
+
+// issue 4054 part 2 - part 1 in test.go
+
+var issue4054b = []int{C.A, C.B, C.C, C.D, C.E, C.F, C.G, C.H, C.II, C.J}
+
+//export issue5548FromC
+func issue5548FromC(s string, i int) int {
+	if len(s) == 4 && s == "test" && i == 42 {
+		return 12345
+	}
+	println("got", len(s), i)
+	return 9876
+}
+
+func test5548(t *testing.T) {
+	if x := C.issue5548_in_c(); x != 12345 {
+		t.Errorf("issue5548_in_c = %d, want %d", x, 12345)
+	}
+}
+
+// issue 6833
+
+//export GoIssue6833Func
+func GoIssue6833Func(aui uint, aui64 uint64) uint64 {
+	return aui64 + uint64(aui)
+}
+
+func test6833(t *testing.T) {
+	ui := 7
+	ull := uint64(0x4000300020001000)
+	v := uint64(C.issue6833Func(C.uint(ui), C.ulonglong(ull)))
+	exp := uint64(ui) + ull
+	if v != exp {
+		t.Errorf("issue6833Func() returns %x, expected %x", v, exp)
+	}
+}
+
+// issue 6907
+
+const CString = "C string"
+
+//export CheckIssue6907Go
+func CheckIssue6907Go(s string) C.int {
+	if s == CString {
+		return 1
+	}
+	return 0
+}
+
+func test6907Go(t *testing.T) {
+	if got := C.CheckIssue6907C(CString); got != 1 {
+		t.Errorf("C.CheckIssue6907C() == %d, want %d", got, 1)
+	}
+}
+
+// issue 7665
+
+var bad7665 unsafe.Pointer = C.f7665
+var good7665 uintptr = uintptr(C.f7665)
+
+func test7665(t *testing.T) {
+	if bad7665 == nil || uintptr(bad7665) != good7665 {
+		t.Errorf("ptrs = %p, %#x, want same non-nil pointer", bad7665, good7665)
+	}
+}
+
+// issue 7978
+
+var issue7978sync uint32
+
+func issue7978check(t *testing.T, wantFunc string, badFunc string, depth int) {
+	runtime.GC()
+	buf := make([]byte, 65536)
+	trace := string(buf[:runtime.Stack(buf, true)])
+	for _, goroutine := range strings.Split(trace, "\n\n") {
+		if strings.Contains(goroutine, "test.issue7978go") {
+			trace := strings.Split(goroutine, "\n")
+			// look for the expected function in the stack
+			for i := 0; i < depth; i++ {
+				if badFunc != "" && strings.Contains(trace[1+2*i], badFunc) {
+					t.Errorf("bad stack: found %s in the stack:\n%s", badFunc, goroutine)
+					return
+				}
+				if strings.Contains(trace[1+2*i], wantFunc) {
+					return
+				}
+			}
+			t.Errorf("bad stack: didn't find %s in the stack:\n%s", wantFunc, goroutine)
+			return
+		}
+	}
+	t.Errorf("bad stack: goroutine not found. Full stack dump:\n%s", trace)
+}
+
+func issue7978wait(store uint32, wait uint32) {
+	if store != 0 {
+		atomic.StoreUint32(&issue7978sync, store)
+	}
+	for atomic.LoadUint32(&issue7978sync) != wait {
+		runtime.Gosched()
+	}
+}
+
+//export issue7978cb
+func issue7978cb() {
+	// Force a stack growth from the callback to put extra
+	// pressure on the runtime. See issue #17785.
+	growStack(64)
+	issue7978wait(3, 4)
+}
+
+func growStack(n int) int {
+	var buf [128]int
+	if n == 0 {
+		return 0
+	}
+	return buf[growStack(n-1)]
+}
+
+func issue7978go() {
+	C.issue7978c((*C.uint32_t)(&issue7978sync))
+	issue7978wait(7, 8)
+}
+
+func test7978(t *testing.T) {
+	if runtime.Compiler == "gccgo" {
+		t.Skip("gccgo can not do stack traces of C code")
+	}
+	debug.SetTraceback("2")
+	issue7978sync = 0
+	go issue7978go()
+	// test in c code, before callback
+	issue7978wait(0, 1)
+	issue7978check(t, "_Cfunc_issue7978c(", "", 1)
+	// test in go code, during callback
+	issue7978wait(2, 3)
+	issue7978check(t, "test.issue7978cb(", "test.issue7978go", 3)
+	// test in c code, after callback
+	issue7978wait(4, 5)
+	issue7978check(t, "_Cfunc_issue7978c(", "_cgoexpwrap", 1)
+	// test in go code, after return from cgo
+	issue7978wait(6, 7)
+	issue7978check(t, "test.issue7978go(", "", 3)
+	atomic.StoreUint32(&issue7978sync, 8)
+}
+
+// issue 8331 part 2
+
+var issue8331Var C.issue8331
+
+// issue 8945
+
+//export Test8945
+func Test8945() {
+	_ = C.func8945
+}
+
+// issue 20910
+
+//export multi
+func multi() (*C.char, C.int) {
+	return C.CString("multi"), 0
+}
+
+func test20910(t *testing.T) {
+	C.callMulti()
+}
+
+// issue 28772 part 2
+
+const issue28772Constant2 = C.issue28772Constant2
+
+// issue 31891
+
+//export useIssue31891A
+func useIssue31891A(c *C.Issue31891A) {}
+
+//export useIssue31891B
+func useIssue31891B(c *C.Issue31891B) {}
+
+func test31891(t *testing.T) {
+	C.callIssue31891()
+}
+
+// issue 37033, check if cgo.Handle works properly
+
+var issue37033 = 42
+
+//export GoFunc37033
+func GoFunc37033(handle C.uintptr_t) {
+	h := cgo.Handle(handle)
+	ch := h.Value().(chan int)
+	ch <- issue37033
+}
+
+// issue 38408
+// A typedef pointer can be used as the element type.
+// No runtime test; just make sure it compiles.
+var _ C.PIssue38408 = &C.Issue38408{i: 1}
+
+// issue 49633, example use of cgo.Handle with void*
+
+type data49633 struct {
+	msg string
+}
+
+//export GoFunc49633
+func GoFunc49633(context unsafe.Pointer) {
+	h := *(*cgo.Handle)(context)
+	v := h.Value().(*data49633)
+	v.msg = "hello"
+}
+
+func test49633(t *testing.T) {
+	v := &data49633{}
+	h := cgo.NewHandle(v)
+	defer h.Delete()
+	C.cfunc49633(unsafe.Pointer(&h))
+	if v.msg != "hello" {
+		t.Errorf("msg = %q, want 'hello'", v.msg)
+	}
+}