golang调用sdl2,播放pcm音频，报错signal arrived during external code e

golang调用sdl2,播放pcm音频，报错signal arrived during external code execution。

win10 x64下测试成功，其他操作系统下不保证成功。

采用的是syscall方式，不是cgo方式。

见地址 在go1.16.15编译后然后执行，会报如下错。换成go1.18就不报错了。

Exception 0xc0000005 0x0 0xc000442000 0x7ff96da8db50 PC=0x7ff96da8db50 signal arrived during external code execution

syscall.Syscall6(0x7ff96daa7440, 0x4, 0x20d6354a0a0, 0xc000442000, 0x1000, 0x10, 0x0, 0x0, 0x0, 0x0, ...) D:/Program Files/Go/go1.16.15/src/runtime/syscall_windows.go:347 +0xf2 syscall.(*Proc).Call(0xc000599b40, 0xc0001207c0, 0x4, 0x4, 0x20, 0xa6ffa0, 0x20d6354a001, 0xc0001207c0) D:/Program Files/Go/go1.16.15/src/syscall/dll_windows.go:188 +0x385 syscall.(*LazyProc).Call(0xc00007fc50, 0xc0001207c0, 0x4, 0x4, 0x3, 0x3, 0x20d6354a0a0, 0x0) D:/Program Files/Go/go1.16.15/src/syscall/dll_windows.go:339 +0x78 github.com/moonfdd/sdl2-go/sdl.SDL_MixAudio(0x20d6354a0a0, 0xc000442000, 0x1000001000) D:/mysetup/gopath/src/sdl2-go/sdl/SDL_audio.go:1185 +0xf1 main.fill_audio_pcm(0xc00010ff48, 0x20d6354a0a0, 0x1000, 0x0) D:/mysetup/gopath/src/sdl2-go/examples/a06-sdl-pcm/main1.go:33 +0x125

goroutine 1 [chan receive]: main.main() D:/mysetup/gopath/src/sdl2-go/examples/a06-sdl-pcm/main1.go:66 +0x288 rax 0x20d6354a0a0 rbx 0xc0000086e0 rcx 0x20d6354a0a0 rdi 0xecaa4c3000 rsi 0xc0000439c0 rbp 0xc000043960 rsp 0xecabbffb50 r8 0x8010 r9 0x20d6354b0a0 r10 0x10 r11 0x4 r12 0xa7b800 r13 0x0 r14 0x0 r15 0x2030001 rip 0x7ff96da8db50 rflags 0x10206 cs 0x33 fs 0x53 gs 0x2b

golang代码如下：

package main

import (
	"fmt"
	"github.com/moonfdd/sdl2-go/sdl"
	"github.com/moonfdd/sdl2-go/sdlcommon"
	"io/ioutil"
	"sync"
	"syscall"
	"unsafe"
)

var o sync.Once

//音频设备回调函数
func fill_audio_pcm(udata sdlcommon.FVoidP, stream *sdlcommon.FUint8T, len1 sdlcommon.FInt) uintptr {
	info := (*Info)(unsafe.Pointer(udata))
	if info.isStop {
		return 0
	}
	if info.Start >= info.Len {
		info.isStop = true
		o.Do(func() {
			ch <- struct{}{}
		})
		return 0
	}
	sdl.SDL_memset(uintptr(unsafe.Pointer(stream)), 0, uint64(len1))
	if len1 > int32(info.Len-info.Start) {
		fmt.Println("不足len", len1, info.Len-info.Start)
		len1 = int32(info.Len - info.Start)
	}
	sdl.SDL_MixAudio(stream, &info.Data[info.Start], uint32(len1), sdl.SDL_MIX_MAXVOLUME/8)
	info.Start += int(len1)
	return 0
}

var ch = make(chan struct{}, 1)

func main() {
	sdlcommon.SetSDL2Path("SDL2.dll")
	var spec sdl.SDL_AudioSpec
	sdl.SDL_Init(sdl.SDL_INIT_AUDIO)
	spec.Freq = 44100
	spec.Format = sdl.AUDIO_S16SYS // 采样点格式
	spec.Channels = 2              // 2通道
	spec.Silence = 0
	spec.Userdata = uintptr(0)
	spec.Samples = 1024                                 // 23.2ms -> 46.4ms 每次读取的采样数量，多久产生一次回调和 samples
	spec.Callback = syscall.NewCallback(fill_audio_pcm) // 回调函数

	fileData, err := ioutil.ReadFile("44100_16bit_2ch.pcm")
	if err != nil {
		fmt.Println("读取文件失败", err)
		return
	}
	info := new(Info)
	info.Data = fileData
	info.Len = len(fileData)
	spec.Userdata = uintptr(unsafe.Pointer(info))
	if sdl.SDL_OpenAudio(&spec, nil) != 0 {
		fmt.Println("打开音频设备失败")
		return
	}
	sdl.SDL_PauseAudio(0)
	<-ch
	fmt.Println("关闭")
	sdl.SDL_CloseAudio()
	sdl.SDL_Quit()
}

type Info struct {
	Data   []byte
	Len    int
	Start  int
	isStop bool
}

执行结果如下：