valgrind在ubuntu64位不能运行的问题

写了一个32的程序，在64位的ubuntu上运行，出现下面的信息：

root@netbod-yesc:~/test/memcheck# valgrind --leak-check=full ./main
==4621== Memcheck, a memory error detector
==4621== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==4621== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==4621== Command: ./main
==4621==

valgrind:  Fatal error at startup: a function redirection
valgrind:  which is mandatory for this platform-tool combination
valgrind:  cannot be set up.  Details of the redirection are:
valgrind:  
valgrind:  A must-be-redirected function
valgrind:  whose name matches the pattern:      strlen
valgrind:  in an object with soname matching:   ld-linux.so.2
valgrind:  was not found whilst processing
valgrind:  symbols from the object with soname: ld-linux.so.2
valgrind:  
valgrind:  Possible fixes: (1, short term): install glibc's debuginfo
valgrind:  package on this machine.  (2, longer term): ask the packagers
valgrind:  for your Linux distribution to please in future ship a non-
valgrind:  stripped ld.so (or whatever the dynamic linker .so is called)
valgrind:  that exports the above-named function using the standard
valgrind:  calling conventions for this platform.  The package you need
valgrind:  to install for fix (1) is called
valgrind:  
valgrind:    On Debian, Ubuntu:                 libc6-dbg
valgrind:    On SuSE, openSuSE, Fedora, RHEL:   glibc-debuginfo
valgrind:  
valgrind:  Cannot continue -- exiting now.  Sorry.

root@netbod-yesc:~/test/memcheck# uname -a
Linux netbod-yesc 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
root@netbod-yesc:~/test/memcheck# cat /etc/issue
Ubuntu 12.10 \n \l

解决办法：
apt-get install libc6-dbg:i386