Stack overflow or what?

[rew]

For debugging: What happens if you roll your own memcpy?

Code: Select all

  for (i=0;i<len;i++) 
      dst[i] = src[i];
 

What /could/ be happening is that one of your pointers is not accessible. If you make it a separate function, prevent inlining and disable a bit of optimization you can step into the function and see the function's arguments.