如何使用Valgrind memcheck工具进行C/C++的内存泄漏检测

$ valgrind --tool=memcheck --leak-check=full ./val

==2888== Memcheck, a memory error detector

==2888== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.

==2888== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info

==2888== Command: ./val

==2888==

 [a]

==2888==

==2888== HEAP SUMMARY:

==2888==     in use at exit: 1 bytes in 1 blocks

==2888==   total heap usage: 1 allocs, 0 frees, 1 bytes allocated

==2888==

==2888== 1 bytes in 1 blocks are definitely lost in loss record 1 of 1

==2888==    at 0x4C274A8: malloc (vg_replace_malloc.c:236)

==2888==    by 0x400575: main (valgrind.c:6)

==2888==

==2888== LEAK SUMMARY:

==2888==    definitely lost: 1 bytes in 1 blocks

==2888==    indirectly lost: 0 bytes in 0 blocks

==2888==      possibly lost: 0 bytes in 0 blocks

==2888==    still reachable: 0 bytes in 0 blocks

==2888==         suppressed: 0 bytes in 0 blocks

==2888==

==2888== For counts of detected and suppressed errors, rerun with: -v

==2888== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 4 from 4)