% cat -n hello.c
     1 #include <stdio.h>
     2 #include <stdlib.h>
     3 #include <string.h>
     4
     5 char *hello1, *hello2;
     6
     7 void
     8 memory_use()
     9 {
    10      hello1 = (char *)malloc(32);
    11      strcpy(hello1, "hello world");
    12      hello2 = (char *)malloc(strlen(hello1)+1);
    13      strcpy(hello2, hello1);
    14 }
    15
    16 void
    17 memory_leak()
    18 {
    19      char *local;
    20      local = (char *)malloc(32);
    21      strcpy(local, "hello world");
    22 }
    23
    24 void
    25 access_error()
    26 {
    27      int i,j;
    28
    29      i = j;
    30 }
    31
    32 int
    33 main()
    34 {
    35      memory_use();
    36      access_error();
    37      memory_leak();
    38      printf("%s\n", hello2);
    39      return 0;
    40 }
% cc -g -o hello hello.c

% dbx -C hello
Reading ld.so.1
Reading librtc.so
Reading libc.so.1
Reading libdl.so.1

(dbx) check -access
access checking - ON
(dbx) check -memuse
memuse checking - ON
(dbx) run Running: hello
(process id 18306)
Enabling Error Checking... done
Read from uninitialized (rui):
Attempting to read 4 bytes at address 0xeffff068
     which is 96 bytes above the current stack pointer
Variable is ’j’
Current function is access_error
    29       i = j;
(dbx) cont
hello world
Checking for memory leaks...
Actual leaks report    (actual leaks:         1 total size:      32 bytes)

 Total      Num of  Leaked     Allocation call stack
 Size       Blocks  Block
                    Address
==========  ====== ==========  =======================================
        32       1    0x21aa8  memory_leak < main

Possible leaks report  (possible leaks:       0  total size:      0 bytes)

Checking for memory use...
Blocks in use report   (blocks in use:        2  total size:      44 bytes

 Total     % of Num of  Avg    Allocation call stack
 Size      All  Blocks  Size
========== ==== ====== ======  =======================================
        32  72%      1     32  memory_use < main
        12  27%      1     12  memory_use < main

execution completed, exit code is 0