代码内存泄露检测工具(linux gcc + valrind)

参考博客: https://www.cnblogs.com/wangkangluo1/archive/2011/07/20/2111248.html

linux命令如下：valgrind --tool=memcheck --leak-check=full ./a.out
若没有valgrind工具，ubuntu下需要sudo apt-get install valgrind

如下：

举例说明：

 #include <iostream>
 using namespace std;

 int main(int argc, char *argv[])
 {
     string* s = new string("hello world");
     cout<<*s<<endl;

     int* m = new int();
     cout<<*m<<endl;

     delete m;

     return ;
 }

 //running:
 nol@nol-VirtualBox:~/desktop$ valgrind --tool=memcheck --leak-check=full ./a.out
 ==== Memcheck, a memory error detector
 ==== Copyright (C) -, and GNU GPL'd, by Julian Seward et al.
 ==== Using Valgrind-3.11. and LibVEX; rerun with -h for copyright info
 ==== Command: ./a.out
 ====
 hello world

 ====
 ==== HEAP SUMMARY:
 ====     in use at exit: , bytes in  blocks
 ====   total heap usage:  allocs,  frees, , bytes allocated
 ====
 ====  bytes in  blocks are definitely lost in loss record  of
 ====    at 0x4C2E0EF: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
 ====    by 0x400C40: main (in /home/nol/desktop/a.out)
 ====
 ==== LEAK SUMMARY:
 ====    definitely lost:  bytes in  blocks
 ====    indirectly lost:  bytes in  blocks
 ====      possibly lost:  bytes in  blocks
 ====    still reachable: , bytes in  blocks
 ====         suppressed:  bytes in  blocks
 ==== Reachable blocks (those to which a pointer was found) are not shown.
 ==== To see them, rerun with: --leak-check=full --show-leak-kinds=all
 ====
 ==== For counts of detected and suppressed errors, rerun with: -v
 ==== ERROR SUMMARY:  errors from  contexts (suppressed:  from )
 nol@nol-VirtualBox:~/desktop$