JNI修改java的静态字段

我试图修改java的一个静态字段，但遇到了一个奇怪的问题。如果我不在C中添加一些冗余代码，Java项目将抛出异常

我正在使用C代码生成.dll

这是我的Java代码

公共类主{
公共静态void main（字符串[]args）{
Main实例=新的Main（）；
System.out.println（“更改静态字段之前：“+staticString”）；
实例.CModifyStaticField（）；
System.out.println（“更改静态字段后：+staticString”）；
}
私有静态字符串staticString=“static”；
私有本机字符串letCModifyStaticField（）；
私有void CModifyStaticField（）{
letCModifyStaticField（）；
}
静止的{
系统加载库（“JNI”）；
}
}

这是我的C代码

JNIEXPORT jstring JNICALL Java\u Main\u letcchangesticfield
（JNIEnv*env，jobject-jobj）{
jclz=（*env）->GetObjectClass（env，jobj）；
//这就是重点
printf（“jclz！=NULL\n”）；
jfieldID jfieldID=（*env）->GetStaticFieldID（env，jclz，“staticString”，“Ljava/lang/String；”）；
jstringjstr=（*env）->GetStaticObjectField（env、jclz、jfieldId）；
char*sourceStr=（*env）->GetStringUTFChars（env、jstr、JNI_FALSE）；
char*newChar=“new”；
strcat（newChar、sourceStr）；
jstringnewstr=（*env）->NewStringUTF（env，newChar）；
（*env）->SetStaticObjectField（env、jclz、jfieldId、newStr）；
返回新闻TR；
}

如果删除printf（）并运行Java项目，它会引发如下异常：

Current thread (0x0000000002a32800):  JavaThread "main" [_thread_in_vm, id=4212, stack(0x0000000002460000,0x0000000002560000)]

siginfo: ExceptionCode=0xc0000005, reading address 0x0000000000000000

Registers:
RAX=0x0000000000000000, RBX=0x0000000002a32800, RCX=0x0000000002a32800, RDX=0x00000007806fe1d8
RSP=0x000000000255f100, RBP=0x000000000255f228, RSI=0x0000000000000000, RDI=0x0000000000000000
R8 =0x0000000000000000, R9 =0x0000000075ad0000, R10=0x0000000000000000, R11=0x000000000255f130
R12=0x0000000000000000, R13=0x0000000019673188, R14=0x000000000255f248, R15=0x0000000002a32800
RIP=0x00000000753755c2, EFLAGS=0x0000000000010202

Top of Stack: (sp=0x000000000255f100)
0x000000000255f100:   000000000255f248 000000007536f2a7
0x000000000255f110:   0000000002a32800 0000000000000000
0x000000000255f120:   000000000255f228 000000000255f248
0x000000000255f130:   0000000002a32800 000000000245ede0
0x000000000255f140:   0000000000000b8b 0000000075838ec0
0x000000000255f150:   000000000255f1b0 00007ffbc4211378
0x000000000255f160:   0000000019673188 000000000255f228
0x000000000255f170:   0000000000000002 cccccccccccccccc
0x000000000255f180:   0000000019bd7e20 0000000000000000
0x000000000255f190:   cccccccccccccccc cccccccccccccccc
0x000000000255f1a0:   cccccccccccccccc cccccccccccccccc
0x000000000255f1b0:   0000000002b3835d 0000000002b48c67
0x000000000255f1c0:   0000000002a329f8 000000000255f248
0x000000000255f1d0:   0000000000000002 0000000002a32800
0x000000000255f1e0:   0000000002b48962 000000000255f1e8
0x000000000255f1f0:   0000000019673188 000000000255f248 

Instructions: (pc=0x00000000753755c2)
0x00000000753755a2:   8b 0e 45 33 c0 33 d2 48 8b cb c6 44 24 28 01 48
0x00000000753755b2:   89 74 24 20 e8 e5 75 07 00 40 38 3d 7e bf 6c 00
0x00000000753755c2:   48 8b 06 48 63 4e 10 48 8b 50 68 74 1b 8b 0c 11
0x00000000753755d2:   85 c9 74 18 8b f9 8b 0d ba f1 65 00 48 d3 e7 48 


Register to memory mapping:

RAX=0x0000000000000000 is an unknown value
RBX=0x0000000002a32800 is a thread
RCX=0x0000000002a32800 is a thread
RDX=0x00000007806fe1d8 is an oop
java.lang.NoSuchFieldError 
 - klass: 'java/lang/NoSuchFieldError'
RSP=0x000000000255f100 is pointing into the stack for thread: 0x0000000002a32800
RBP=0x000000000255f228 is pointing into the stack for thread: 0x0000000002a32800
RSI=0x0000000000000000 is an unknown value
RDI=0x0000000000000000 is an unknown value
R8 =0x0000000000000000 is an unknown value
R9 =0x0000000075ad0000 is an unknown value
R10=0x0000000000000000 is an unknown value
R11=0x000000000255f130 is pointing into the stack for thread: 0x0000000002a32800
R12=0x0000000000000000 is an unknown value
R13={method} {0x0000000019673190} 'letCChangeStaticField' '()Ljava/lang/String;' in 'Main'
R14=0x000000000255f248 is pointing into the stack for thread: 0x0000000002a32800
R15=0x0000000002a32800 is a thread


Stack: [0x0000000002460000,0x0000000002560000],  sp=0x000000000255f100,  free space=1020k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [jvm.dll+0x1455c2]
C  [JNI.dll+0x1378]  Java_Main_letCChangeStaticField+0x88
C  0x0000000002b48c67

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  Main.letCChangeStaticField()Ljava/lang/String;+0
j  Main.CAllocStaticField()V+1
j  Main.main([Ljava/lang/String;)V+123
v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )
  0x000000001b0b2800 JavaThread "Service Thread" daemon [_thread_blocked, id=12496, stack(0x000000001b9d0000,0x000000001bad0000)]
  0x000000001b029000 JavaThread "C1 CompilerThread2" daemon [_thread_blocked, id=11392, stack(0x000000001b8d0000,0x000000001b9d0000)]
  0x000000001b028000 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=11784, stack(0x000000001b7d0000,0x000000001b8d0000)]
  0x000000001b017000 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=12172, stack(0x000000001b6d0000,0x000000001b7d0000)]
  0x000000001b014800 JavaThread "Monitor Ctrl-Break" daemon [_thread_in_native, id=9204, stack(0x000000001b5d0000,0x000000001b6d0000)]
  0x0000000019c6b800 JavaThread "Attach Listener" daemon [_thread_blocked, id=7176, stack(0x000000001b4d0000,0x000000001b5d0000)]
  0x000000001afd8800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=13860, stack(0x000000001b3d0000,0x000000001b4d0000)]
  0x0000000019bf8800 JavaThread "Finalizer" daemon [_thread_blocked, id=14108, stack(0x000000001ae70000,0x000000001af70000)]
  0x0000000002b24000 JavaThread "Reference Handler" daemon [_thread_blocked, id=1092, stack(0x000000001ad70000,0x000000001ae70000)]
=>0x0000000002a32800 JavaThread "main" [_thread_in_vm, id=4212, stack(0x0000000002460000,0x0000000002560000)]

Other Threads:
  0x0000000019bd7800 VMThread [stack: 0x000000001ac70000,0x000000001ad70000] [id=14300]
  0x000000001b0d3800 WatcherThread [stack: 0x000000001bad0000,0x000000001bbd0000] [id=6412]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap:
 PSYoungGen      total 57344K, used 3940K [0x0000000780580000, 0x0000000784580000, 0x00000007c0000000)
  eden space 49152K, 8% used [0x0000000780580000,0x00000007809590f0,0x0000000783580000)
  from space 8192K, 0% used [0x0000000783d80000,0x0000000783d80000,0x0000000784580000)
  to   space 8192K, 0% used [0x0000000783580000,0x0000000783580000,0x0000000783d80000)
 ParOldGen       total 131072K, used 0K [0x0000000701000000, 0x0000000709000000, 0x0000000780580000)
  object space 131072K, 0% used [0x0000000701000000,0x0000000701000000,0x0000000709000000)
 Metaspace       used 3445K, capacity 4500K, committed 4864K, reserved 1056768K
  class space    used 376K, capacity 388K, committed 512K, reserved 1048576K

Card table byte_map: [0x0000000011ef0000,0x00000000124f0000] byte_map_base: 0x000000000e6e8000

Marking Bits: (ParMarkBitMap*) 0x0000000075a508c0
 Begin Bits: [0x0000000012cf0000, 0x0000000015cb0000)
 End Bits:   [0x0000000015cb0000, 0x0000000018c70000)

Polling page: 0x0000000000770000

CodeCache: size=245760Kb used=1118Kb max_used=1118Kb free=244641Kb
 bounds [0x0000000002b30000, 0x0000000002da0000, 0x0000000011b30000]
 total_blobs=283 nmethods=25 adapters=171
 compilation: enabled

Compilation events (10 events):
Event: 0.174 Thread 0x000000001b029000   20       3       java.util.HashMap::hash (20 bytes)
Event: 0.174 Thread 0x000000001b029000 nmethod 20 0x0000000002c44990 code [0x0000000002c44b00, 0x0000000002c44d48]
Event: 0.174 Thread 0x000000001b029000   21       3       java.lang.String::indexOf (7 bytes)
Event: 0.175 Thread 0x000000001b029000 nmethod 21 0x0000000002c45410 code [0x0000000002c45580, 0x0000000002c45788]
Event: 0.175 Thread 0x000000001b029000   22       3       java.lang.String::indexOf (70 bytes)
Event: 0.175 Thread 0x000000001b029000 nmethod 22 0x0000000002c45810 code [0x0000000002c459a0, 0x0000000002c45d48]
Event: 0.175 Thread 0x000000001b029000   23       3       java.util.HashMap::getNode (148 bytes)
Event: 0.176 Thread 0x000000001b029000 nmethod 23 0x0000000002c45e90 code [0x0000000002c46060, 0x0000000002c46a08]
Event: 0.181 Thread 0x000000001b029000   24       3       java.util.concurrent.ConcurrentHashMap::tabAt (21 bytes)
Event: 0.181 Thread 0x000000001b029000 nmethod 24 0x0000000002c47810 code [0x0000000002c47960, 0x0000000002c47b90]

GC Heap History (0 events):
No events

Deoptimization events (0 events):
No events

Classes redefined (0 events):
No events

Internal exceptions (3 events):
Event: 0.048 Thread 0x0000000002a32800 Exception <a 'java/lang/NoSuchMethodError': Method sun.misc.Unsafe.defineClass(Ljava/lang/String;[BII)Ljava/lang/Class; name or signature does not match> (0x0000000780587cb0) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot
Event: 0.048 Thread 0x0000000002a32800 Exception <a 'java/lang/NoSuchMethodError': Method sun.misc.Unsafe.prefetchRead(Ljava/lang/Object;J)V name or signature does not match> (0x0000000780587f98) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prim
Event: 0.181 Thread 0x0000000002a32800 Exception <a 'java/lang/NoSuchFieldError': staticString> (0x00000007806fe1d8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 2955]

Events (10 events):
Event: 0.177 loading class sun/net/NetHooks
Event: 0.177 loading class sun/net/NetHooks done
Event: 0.178 loading class java/net/Socket$2
Event: 0.178 loading class java/net/Socket$2 done
Event: 0.178 loading class java/net/SocketInputStream
Event: 0.178 loading class java/net/SocketInputStream done
Event: 0.178 loading class sun/nio/cs/US_ASCII$Decoder
Event: 0.179 loading class sun/nio/cs/US_ASCII$Decoder done
Event: 0.181 loading class java/lang/NoSuchFieldError
Event: 0.181 loading class java/lang/NoSuchFieldError done


Dynamic libraries:
0x00007ff7defc0000 - 0x00007ff7deff7000     D:\MyEclipse\JDK\bin\java.exe
0x00007ffbda340000 - 0x00007ffbda521000     C:\WINDOWS\SYSTEM32\ntdll.dll
0x00007ffbd9f80000 - 0x00007ffbda031000     C:\WINDOWS\System32\KERNEL32.DLL
0x00007ffbd6990000 - 0x00007ffbd6c03000     C:\WINDOWS\System32\KERNELBASE.dll
0x00007ffbd8160000 - 0x00007ffbd8201000     C:\WINDOWS\System32\ADVAPI32.dll
0x00007ffbda260000 - 0x00007ffbda2fe000     C:\WINDOWS\System32\msvcrt.dll
0x00007ffbda070000 - 0x00007ffbda0cb000     C:\WINDOWS\System32\sechost.dll
0x00007ffbd77c0000 - 0x00007ffbd78e4000     C:\WINDOWS\System32\RPCRT4.dll
0x00007ffbda0d0000 - 0x00007ffbda260000     C:\WINDOWS\System32\USER32.dll
0x00007ffbd6700000 - 0x00007ffbd6720000     C:\WINDOWS\System32\win32u.dll
0x00007ffbd79c0000 - 0x00007ffbd79e8000     C:\WINDOWS\System32\GDI32.dll
0x00007ffbd7420000 - 0x00007ffbd75b1000     C:\WINDOWS\System32\gdi32full.dll
0x00007ffbd7620000 - 0x00007ffbd76bf000     C:\WINDOWS\System32\msvcp_win.dll
0x00007ffbd76c0000 - 0x00007ffbd77b8000     C:\WINDOWS\System32\ucrtbase.dll
0x00007ffbc90a0000 - 0x00007ffbc9309000     C:\WINDOWS\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.17134.982_none_fb3fa44f30680781\COMCTL32.dll
0x00007ffbd7ae0000 - 0x00007ffbd7e02000     C:\WINDOWS\System32\combase.dll
0x00007ffbd6720000 - 0x00007ffbd6799000     C:\WINDOWS\System32\bcryptPrimitives.dll
0x00007ffbd8010000 - 0x00007ffbd803d000     C:\WINDOWS\System32\IMM32.DLL
0x0000000075ad0000 - 0x0000000075ba2000     D:\MyEclipse\JDK\jre\bin\msvcr100.dll
0x0000000075230000 - 0x0000000075ad0000     D:\MyEclipse\JDK\jre\bin\server\jvm.dll
0x00007ffbda060000 - 0x00007ffbda068000     C:\WINDOWS\System32\PSAPI.DLL
0x00007ffbd4630000 - 0x00007ffbd4653000     C:\WINDOWS\SYSTEM32\WINMM.dll
0x00007ffbd22f0000 - 0x00007ffbd22fa000     C:\WINDOWS\SYSTEM32\VERSION.dll
0x00007ffbd4600000 - 0x00007ffbd462a000     C:\WINDOWS\SYSTEM32\winmmbase.dll
0x00007ffbd6c10000 - 0x00007ffbd6c59000     C:\WINDOWS\System32\cfgmgr32.dll
0x00007ffbcf220000 - 0x00007ffbcf229000     C:\WINDOWS\SYSTEM32\WSOCK32.dll
0x00007ffbd80f0000 - 0x00007ffbd815c000     C:\WINDOWS\System32\WS2_32.dll
0x0000000075220000 - 0x000000007522f000     D:\MyEclipse\JDK\jre\bin\verify.dll
0x00000000751f0000 - 0x0000000075219000     D:\MyEclipse\JDK\jre\bin\java.dll
0x00000000751a0000 - 0x00000000751c3000     D:\MyEclipse\JDK\jre\bin\instrument.dll
0x00000000751d0000 - 0x00000000751e6000     D:\MyEclipse\JDK\jre\bin\zip.dll
0x00007ffbd8a90000 - 0x00007ffbd9ed2000     C:\WINDOWS\System32\SHELL32.dll
0x00007ffbd8040000 - 0x00007ffbd80e9000     C:\WINDOWS\System32\shcore.dll
0x00007ffbd6c60000 - 0x00007ffbd736e000     C:\WINDOWS\System32\windows.storage.dll
0x00007ffbd7960000 - 0x00007ffbd79b1000     C:\WINDOWS\System32\shlwapi.dll
0x00007ffbd66e0000 - 0x00007ffbd66f1000     C:\WINDOWS\System32\kernel.appcore.dll
0x00007ffbd66c0000 - 0x00007ffbd66df000     C:\WINDOWS\System32\profapi.dll
0x00007ffbd6640000 - 0x00007ffbd668c000     C:\WINDOWS\System32\powrprof.dll
0x00007ffbd6690000 - 0x00007ffbd669a000     C:\WINDOWS\System32\FLTLIB.DLL
0x00007ffbc54f0000 - 0x00007ffbc550a000     D:\IntelliJ IDEA 2018.2.6\bin\breakgen64.dll
0x0000000075180000 - 0x000000007519a000     D:\MyEclipse\JDK\jre\bin\net.dll
0x00007ffbd5e40000 - 0x00007ffbd5ea6000     C:\WINDOWS\system32\mswsock.dll
0x00007ffbc4210000 - 0x00007ffbc421f000     D:\C_WorkSpace\JNI_C\JNI\x64\Debug\JNI.dll
0x00007ffb8cd00000 - 0x00007ffb8cf11000     C:\WINDOWS\SYSTEM32\MSVCR120D.dll
0x00007ffbc47e0000 - 0x00007ffbc49a9000     C:\WINDOWS\SYSTEM32\dbghelp.dll

VM Arguments:
jvm_args: -Djava.library.path=D:\C_WorkSpace\JNI_C\JNI\x64\Debug -javaagent:D:\IntelliJ IDEA 2018.2.6\lib\idea_rt.jar=14418:D:\IntelliJ IDEA 2018.2.6\bin -Dfile.encoding=UTF-8 
java_command: Main
java_class_path (initial): D:\MyEclipse\JDK\jre\lib\charsets.jar;D:\MyEclipse\JDK\jre\lib\deploy.jar;D:\MyEclipse\JDK\jre\lib\ext\access-bridge-64.jar;D:\MyEclipse\JDK\jre\lib\ext\cldrdata.jar;D:\MyEclipse\JDK\jre\lib\ext\dnsns.jar;D:\MyEclipse\JDK\jre\lib\ext\jaccess.jar;D:\MyEclipse\JDK\jre\lib\ext\jfxrt.jar;D:\MyEclipse\JDK\jre\lib\ext\localedata.jar;D:\MyEclipse\JDK\jre\lib\ext\nashorn.jar;D:\MyEclipse\JDK\jre\lib\ext\sunec.jar;D:\MyEclipse\JDK\jre\lib\ext\sunjce_provider.jar;D:\MyEclipse\JDK\jre\lib\ext\sunmscapi.jar;D:\MyEclipse\JDK\jre\lib\ext\sunpkcs11.jar;D:\MyEclipse\JDK\jre\lib\ext\zipfs.jar;D:\MyEclipse\JDK\jre\lib\javaws.jar;D:\MyEclipse\JDK\jre\lib\jce.jar;D:\MyEclipse\JDK\jre\lib\jfr.jar;D:\MyEclipse\JDK\jre\lib\jfxswt.jar;D:\MyEclipse\JDK\jre\lib\jsse.jar;D:\MyEclipse\JDK\jre\lib\management-agent.jar;D:\MyEclipse\JDK\jre\lib\plugin.jar;D:\MyEclipse\JDK\jre\lib\resources.jar;D:\MyEclipse\JDK\jre\lib\rt.jar;D:\C_WorkSpace\JNI\out\production\JNI;D:\IntelliJ IDEA 2018.2.6\lib\idea_rt.jar
Launcher Type: SUN_STANDARD

Environment Variables:
JAVA_HOME=D:\MyEclipse\JDK
PATH=C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;D:\MyEclipse\JDK\bin;D:\MyEclipse\Mysql\MySQL Server5.5\bin;D:\MyEclipse\Mysql Server 5.5\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;D:\Android\SDK\ndk-bundle;D:\Git\cmd;D:\Git\bin;D:\flutter\bin;D:\Android\SDK\platform-tools;D:\Android\SDK\tools;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Users\Administrator\AppData\Local\Microsoft\WindowsApps;D:\Fiddler\Fiddler2;D:\Microsoft VS Code\bin;C:\Users\Administrator\AppData\Local\GitHubDesktop\bin
USERNAME=Administrator
OS=Windows_NT
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 60 Stepping 3, GenuineIntel

当前线程（0x0000000002a32800）：JavaThread“main”[\u vm中的线程，id=4212，堆栈（0x000000000246000,0x0000000002560000）]
siginfo:ExceptionCode=0xc0000005，读取地址0x0000000000000000
登记册：
RAX=0x0000000000000000，RBX=0x0000000002a32800，RCX=0x0000000002a32800，RDX=0x00000007806fe1d8
RSP=0x000000000255f100，RBP=0x000000000255f228，RSI=0x0000000000000000，RDI=0x0000000000000000
R8=0x0000000000000000，R9=0x0000000075ad0000，R10=0x0000000000000000，R11=0x000000000255f130
R12=0x0000000000000000，R13=0x0000000019673188，R14=0x000000000255f248，R15=0x0000000002a32800
RIP=0x00000000753755c2，EFLAGS=0x000000000010202
堆栈顶部：（sp=0x000000000255f100）
0x000000000255f100:000000000 255F248 00000000 7536F2A7
0x000000000255f110:000000000 2A32800000000000000000
0x000000000255f120:000000000 255F228 000000000 255F248
0x000000000255f130:000000000 2A3280000000000 2450
0x000000000255f140:0000000000000 B8B 00000000 75838EC0
0x000000000255f150:000000000255F1B000007FFBC4211378
0x000000000255f160:00000000 19673188000000000 255F228
0x000000000255f170:0000000000002 CCCC
0x000000000255f180:00000000 19BD7E20 0000000000000000
0x000000000255f190:CCCC
0x000000000255f1a0:CCCC
0x000000000255f1b0:000000000 2B3835D 000000000 2B48C67
0x000000000255f1c0:0000000002A329F8000000000255F248
0x000000000255f1d0:000000000000000 2 000000000 2A32800
0x000000000255f1e0:000000000 2B48962 000000000 255F1E8
0x000000000255f1f0:0000000019673188000000000255F248
说明：（pc=0x00000000753755c2）
0x00000000753755a2:8b 0e 45 33 c0 33 d2 48 8b cb c6 44 24 28 01 48
0x00000000753755b2:89 74 24 20 e8 e5 75 07 00 40 38 3d 7e bf 6c 00
0x00000000753755c2:48 8b 06 48 63 4e 10 48 8b 50 68 74 1b 8b 0c 11
0x00000000753755d2:85 c9 74 18 8b f9 8b 0d ba f1 65 00 48 d3 e7 48
寄存器到内存映射：
RAX=0x0000000000000000是未知值
RBX=0x0000000002a32800是一个线程
RCX=0x0000000002a32800是一个线程
RDX=0x00000007806fe1d8是一个oop
java.lang.NoSuchFieldError
-klass:'java/lang/NoSuchFieldError'
RSP=0x000000000255f100指向线程0x0000000002a32800的堆栈
RBP=0x000000000255f228指向线程0x0000000002a32800的堆栈
RSI=0x0000000000000000是未知值
RDI=0x0000000000000000是未知值
R8=0x0000000000000000是未知值
R9=0x0000000075ad0000是未知值
R10=0x0000000000000000是未知值
R11=0x000000000255f130指向线程0x0000000002a32800的堆栈
R12=0x0000000000000000是未知值
R13={method}{0x0000000019673190}'letcchangesticfield''（）Ljava/lang/String；'“主要”
R14=0x000000000255f248指向线程0x0000000002a32800的堆栈
R15=0x0000000002a32800是一个线程
堆栈：[0x000000000246000,0x0000000002560000]，sp=0x000000000255f100，可用空间=1020k
本机框架：（J=编译的Java代码，J=解释的，Vv=虚拟机代码，C=本机代码）
V[jvm.dll+0x1455c2]
C[JNI.dll+0x1378]Java\u Main\u letCChangeStaticField+0x88
C 0x0000000002b48c67
Java框架：（J=编译的Java代码，J=解释的，Vv=虚拟机代码）
j Main.letcchangesticfield（）Ljava/lang/String+0
j Main.CAllocStaticField（）V+1
Main.Main（[Ljava/lang/String；）V+123
v~StubRoutines:：调用_stub
---------------P R O C E S---------------
Java线程：（=>当前线程）
0x000000001b0b2800 JavaThread“服务线程”守护程序[_Thread_blocked，id=12496，堆栈（0x000000001b9d0000,0x000000001bad0000）]
0x000000001b029000 JavaThread“C1编译器线程2”守护程序[_thread_blocked，id=11392，堆栈（0x000000001b8d0000,0x000000001b9d0000）]
0x000000001b028000 JavaThread“C2编译器线程1”守护程序[_thread_blocked，id=11784，堆栈（0x000000001b7d0000,0x000000001b8d0000）]
0x000000001b017000 JavaThread“C2编译器线程0”守护程序[_thread_blocked，id=12172，堆栈（0x000000001b6d0000,0x000000001b7d0000）]
0x000000001b014800 JavaThread“Monitor Ctrl Break”守护程序[\u本地线程，id=9204，堆栈（0x000000001b5d0000,0x000000001b6d0000）]
0x0000000019c6b800 JavaThread“Attach Listener”守护程序[_thread_blocked，id=7176，堆栈（0x000000001b4d0000,0x000000001b5d0000）]
0x000000001afd8800 JavaThread“信号调度程序”守护程序[_thread_blocked，id=13860，堆栈（0x000000001b3d0000,0x000000001b4d0000）]
0x0000000019bf8800 JavaThread“Finalizer”守护程序[\u线程\u被阻止，id
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strcat(newChar, sourceStr);