delete [] pCharPointer

[utkarsharma]

I am face'g proble in the DLL. when I work in Debug mode the code work fine /////--code is--////// char* pCharPointer = new char[intLength]; // //some code // pCharPointer = NULL; delete [] pCharPointer; /////////// But give error in release mode..... ////////////////////////////////////////////////////////// If I change the code to //////--code---///// char* pCharPointer = new char[intLength]; // //some code // //----pCharPointer = NULL; delete [] pCharPointer; /////////// it work's fine in release mode but give error in the debug mode... It will be a big help if some body can clear WHY???? utkarsh sharma "Not everything that counts can be counted, and not everything that can be counted counts."

[Mike Dimmick]

The first snippet is just wrong - you're overwriting the actual pointer to the memory block, which causes delete[] to simply do nothing in release mode. There's probably an assert in debug mode to tell you that you're trying to delete a null pointer. If your debug mode is telling you about a problem, you should probably listen. Release mode doesn't do as much checking. Could you be corrupting this pointer somehow? It would help if you posted the error message(s).

[John R Shaw]

I wish to elaborate on what mike said.

char* pCharPointer = new char[intLength]; // pCharPointer now contians an address like 0x50FC3456

pCharPointer = NULL; // pCharPointer now contians 0x00000000

delete [] pCharPointer; // does nothing and is still a valid call

char* pCharPointer = new char[intLength]; // pCharPointer now contians an address like 0x50FC3456

delete [] pCharPointer; // frees/releases memory
delete [] pCharPointer; // error - already free
pCharPointer = NULL; // pCharPointer now contians 0x00000000
delete [] pCharPointer; // does nothing and is still a valid call

INTP

[Jorgen Sigvardsson]

pCharPointer = NULL;
delete [] pCharPointer;

Sir, are you blind? That if anything ought to raise suspicions. :) -- If there was a problem, Yo, I'll solve it! Check out the hook while my DJ revolves it.