valgrind-3.4.1在AIX5.3下的安装和运行

yaergou

通过48小时的努力，终于完成了AIX5.3下的valgrind-3.4.1的安装，现在总结一下给各位。


1）一个非法访问内存加内存泄漏的例子如下：

#include<stdlib.h>


void fun()
{
        int* p = (int*)malloc(10*sizeof(int));
        p[10] = 'a';
}

int main(int argc,char* argv[])
{
        printf("begin to leak \n");
        fun();
        printf("leak a lot \n");
        return 0;
}



2）我们使用valgrind进行检查

valgrind --tool=memcheck ./a.out
==7729550== Memcheck, a memory error detector.
==7729550== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
==7729550== Using LibVEX rev 1884, a library for dynamic binary translation.
==7729550== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
==7729550== Using valgrind-3.4.1, a dynamic binary instrumentation framework.
==7729550== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
==7729550== For more details, rerun with: -v
==7729550==
begin to leak
==7729550== Invalid write of size 4
==7729550==    at 0x100004D4: leak (in /proc/7729550/object/a.out)
==7729550==    by 0x1000052F: main (in /proc/7729550/object/a.out)
==7729550==  Address 0x216a4050 is 0 bytes after a block of size 40 alloc'd
==7729550==    at 0xDD1ED5B0: malloc (vg_replace_malloc.c:207)
==7729550==    by 0x100004BB: leak (in /proc/7729550/object/a.out)
==7729550==    by 0x1000052F: main (in /proc/7729550/object/a.out)
leak a lot
==7729550==
==7729550== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
==7729550== malloc/free: in use at exit: 40 bytes in 1 blocks.
==7729550== malloc/free: 1 allocs, 0 frees, 40 bytes allocated.
==7729550== For counts of detected errors, rerun with: -v
==7729550== searching for pointers to 1 not-freed blocks.
==7729550== checked 9,012,008 bytes.
==7729550==
==7729550== LEAK SUMMARY:
==7729550==    definitely lost: 0 bytes in 0 blocks.
==7729550==      possibly lost: 0 bytes in 0 blocks.
==7729550==    still reachable: 40 bytes in 1 blocks.
==7729550==         suppressed: 0 bytes in 0 blocks.
==7729550== Rerun with --leak-check=full to see details of leaked memory.



我在生产系统上进行了测试，效果不错，有兴趣的朋友，可以关注下，我后续补充下编译和安装的过程。

hotshanyu

楼主的后续补充呢 没了？太监了？