Cast from a pointer to an integer of a different size

Problem: I received the following warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Solution: The GNU Compiler Collection (GCC) 4.6.3 issues a warning when you cast a pointer to an integer that is a different size. The [-Wpointer-to-int-cast] warning is enabled by specifying the -Wall compiler option.

Example 1:

 if (dir->d_name[0] == '.' &&
      dir->d_name[1] == (char) NULL)                   
     continue;                                        
 if (dir->d_name[0] == '.' && dir->d_name[1] == '.' &&
      dir->d_name[2] == (char) NULL) 
     continue;

Example 1 corrected code:

 if (dir->d_name[0] == '.' &&
      dir->d_name[1] == '\0')                             
     continue;                                            
 if (dir->d_name[0] == '.' && dir->d_name[1] == '.' &&
      dir->d_name[2] == '\0')                            
     continue;

Example 2:

if(ecbp2()->ce2glue != (unsigned int) NULL)
      return;

Example 2 corrected code:

if(ecbp2()->ce2glue != 0
      return;

Note: The -Wpointer-to-int-cast warning can be valuable; therefore, do not suppress the warning by using the -Wno-pointer-to-int-cast compiler option unless you are sure that your code is correct.