func: void CWE690_NULL_Deref_From_Return__wchar_t_calloc_21_bad() wchar_t * data ; data = ( wchar_t * ) calloc ( 20 , sizeof ( wchar_t ) ); badSink ( data ); static void badSink(wchar_t * data) wcscpy ( data , L "Initialize" ) printWLine ( data ); void printWLine (const wchar_t * line) if ( line != NULL )  wprintf ( L "%ls\n" , line ) free ( data ); 