func: void CWE195_Signed_to_Unsigned_Conversion_Error__rand_malloc_21_bad() int data ; data = - 1; data = badSource ( data ); static int badSource(int data) if ( badStatic )  data = RAND32 ( ); return data ; if ( data < 100 )  char * dataBuffer = ( char * ) malloc ( data ) ; memset ( dataBuffer , 'A' , data - 1 ); dataBuffer [ data - 1 ] = '\0'; free ( dataBuffer ); 