捕获操作码0xCC作为异常

假设C程序可能触发操作码异常

0xCC

我怎样才能抓住它

我试过：

__try   
    {

  ...some code

    }

__except(GetExceptionCode()==EXCEPTION_EXECUTE_HANDLER)     
{ 
     _tprintf(_T("Error\n"),i);

      return 0;
}

这对我不起作用。我做错了什么？

---

谢谢

您没有检查正确的异常代码

int3

抛出

EXCEPTION\u SINGLE\u STEP

你可以这样处理：

__try 
{
    // some code that might cause an int3
}
__except(GetExceptionCode() == EXCEPTION_SINGLE_STEP ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) 
{
    // error handling of int3
}

---

编辑：请注意，连接了调试器的代码运行时不会看到异常，因为调试器会处理该异常并在将手传回代码之前清除该异常。

由于这是一个win32程序，您可以随时设置自己的“crashhandler” 这是我的一个程序中的一个粗略片段。自担风险使用；）

---

C没有内置的异常处理程序，所以您应该指定用于提供异常的内容。这是Win32异常处理吗？@Swiss是的，例如，这是文档。不过，不确定要添加哪些标记。这不是API，而是一种经过修改的语言。

LONG WINAPI crashhandler(struct _EXCEPTION_POINTERS* ExceptionInfo); 

SetErrorMode(SEM_FAILCRITICALERRORS);
SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)crashhandler);

LONG WINAPI crashhandler(struct _EXCEPTION_POINTERS* ExceptionInfo)
{
  DWORD exceptioncode;
  char  exceptiondesc[8192];

  exceptioncode = ExceptionInfo->ExceptionRecord->ExceptionCode;

  switch(exceptioncode)
  {
    case EXCEPTION_ACCESS_VIOLATION:
      strcpy(exceptiondesc,"EXCEPTION_ACCESS_VIOLATION:");
      break;
    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
      strcpy(exceptiondesc,"EXCEPTION_ARRAY_BOUNDS_EXCEEDED:");
      break;
    case EXCEPTION_BREAKPOINT:
      strcpy(exceptiondesc,"EXCEPTION_BREAKPOINT:");
      break;
    case EXCEPTION_DATATYPE_MISALIGNMENT:
      strcpy(exceptiondesc,"EXCEPTION_DATATYPE_MISALIGNMENT:");
      break;
    case EXCEPTION_FLT_DENORMAL_OPERAND:
      strcpy(exceptiondesc,"EXCEPTION_FLT_DENORMAL_OPERAND:");
      break;
    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
      strcpy(exceptiondesc,"EXCEPTION_FLT_DIVIDE_BY_ZERO:");
      break;
    case EXCEPTION_FLT_INEXACT_RESULT:
      strcpy(exceptiondesc,"EXCEPTION_FLT_INEXACT_RESULT:");
      break;
    case EXCEPTION_FLT_INVALID_OPERATION:
      strcpy(exceptiondesc,"EXCEPTION_FLT_INVALID_OPERATION:");
      break;
    case EXCEPTION_FLT_OVERFLOW:
      strcpy(exceptiondesc,"EXCEPTION_FLT_OVERFLOW:");
      break;
    case EXCEPTION_FLT_STACK_CHECK:
      strcpy(exceptiondesc,"EXCEPTION_FLT_STACK_CHECK:");
      break;
    case EXCEPTION_FLT_UNDERFLOW:
      strcpy(exceptiondesc,"EXCEPTION_FLT_UNDERFLOW:");
      break;
    case EXCEPTION_ILLEGAL_INSTRUCTION:
      strcpy(exceptiondesc,"EXCEPTION_ILLEGAL_INSTRUCTION:");
      break;
    case EXCEPTION_IN_PAGE_ERROR:
      strcpy(exceptiondesc,"EXCEPTION_IN_PAGE_ERROR:");
      break;
    case EXCEPTION_INT_DIVIDE_BY_ZERO:
      strcpy(exceptiondesc,"EXCEPTION_INT_DIVIDE_BY_ZERO:");
      break;
    case EXCEPTION_INT_OVERFLOW:
      strcpy(exceptiondesc,"EXCEPTION_INT_OVERFLOW:");
      break;
    case EXCEPTION_INVALID_DISPOSITION:
      strcpy(exceptiondesc,"EXCEPTION_INVALID_DISPOSITION:");
      break;
    case EXCEPTION_NONCONTINUABLE_EXCEPTION:
      strcpy(exceptiondesc,"EXCEPTION_NONCONTINUABLE_EXCEPTION:");
      break;
    case EXCEPTION_PRIV_INSTRUCTION:
      strcpy(exceptiondesc,"EXCEPTION_PRIV_INSTRUCTION:");
      break;
    case EXCEPTION_SINGLE_STEP:
      strcpy(exceptiondesc,"EXCEPTION_SINGLE_STEP:");
      break;
    case EXCEPTION_STACK_OVERFLOW:
      strcpy(exceptiondesc,"EXCEPTION_STACK_OVERFLOW:");
      break;
    default:
      strcpy(exceptiondesc,"Unknown exception\n");
      break;

  }

  printf("** --- CRASH BANG BOOM ---\n");
  printf("** Exception             : 0x%08x\n",exceptioncode);
  printf("** Exception description : %s\n"    ,exceptiondesc);
  printf("** Exception flags       : 0x%08x\n",ExceptionInfo->ExceptionRecord->ExceptionFlags);
  printf("** Exception address     : 0x%08x\n",ExceptionInfo->ExceptionRecord->ExceptionAddress);
  printf("**\n");

  //return EXCEPTION_EXECUTE_HANDLER;
  //return EXCEPTION_CONTINUE_EXECUTION;
  //return EXCEPTION_CONTINUE_SEARCH;

  return 0;
}