Re: Handling Crashes in C++ program internally

From:

=?Utf-8?B?U2FjaGlu?= <Sachin@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.language

Date:

Fri, 3 Apr 2009 05:26:01 -0700

Message-ID:

<CC3942F7-D38A-4E59-9924-13EF1D1665E4@microsoft.com>

thanks all :)

i have started implementing RAII in my code .

can someone share some good link or document on using auto_ptr ?

"Ben Voigt [C++ MVP]" wrote:

Now looking at the nested function calls i have adding try catch is
mandatory at all level so that i can free memory and resources in
respective
function.

Do you still think there is better alternative?

RAII and smart pointers.

Absolutely. Let's take a look at that error handling code again, shall we?

  void func2()
{
    // open some file and allocate some memory
    FILE* file = fopen("dummy.txt", "w+");

    char* mem = new char[10];

      now do somthing which will cause WIN32 Exception
       try
      {
           char* ch = NULL;
            strcpy(ch, "msdn");
      }
     catch(SE_Exception)
    {
         printf("\n translated WIN32 exception caught here");
         fclose(file);
         delete[]mem ;
    }

         fclose(file);
         delete[]mem ;
  }

Can anyone say "closed invalid FILE* and double freed mem"?

try/catch is not for cleanup. Destructors are for cleanup. Learn RAII.