Question

Is there software smart enough to figure out that you got a pointer from somewhere and the returned pointer could be NULL and no where in the block do you do:

ptr = getSomeDataThatCouldReturnNULLAt(-1);

…

if(ptr)
{
   //code
}

or

if(!ptr)
{
   return;
}

Is there software that can let you know all the places where this might not be checked?

Thanks

Checking for runtime problems.

Answer 1

the better way to code this would be as follows :

s32 getSomeDataThatCouldReturnNULLAt( s32 intParam, void **inputPointer);

and then in your function where you want to invoke this function :

s32 returnValue = 0 ;
void * ptr = NULL ; 

if((returnValue = getSomeDataThatCouldReturnNULLAt( -1, &ptr) ) != ERROR ||
  ptr ==NULL )
   return returnValue;  

returnValue can indicate the error that occured in your getSomeDataThatCouldReturnNULLAt