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Re: memory leak in bash


From: Eduardo Bustamante
Subject: Re: memory leak in bash
Date: Thu, 11 May 2017 09:39:19 -0500

On Thu, May 11, 2017 at 3:47 AM, wuzongyong (A) <address@hidden> wrote:
[...]
> My bash version is  version 4.2.46(1)-release, valgrind version is  3.11.0 , 
> could someone help to tell me if it is a bug please? And I wanna to know the 
> deeply level reason.

Try with a more recent version. Version 4.2.46 is a few years old now.

address@hidden:~$ cat script
#! /bin/bash
rc_exit ()
{
exit 0
}
rc_exit

address@hidden:~$ valgrind bash ./script
==14004== Memcheck, a memory error detector
==14004== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==14004== Using Valgrind-3.12.0.SVN and LibVEX; rerun with -h for copyright info
==14004== Command: bash ./script
==14004==
==14004==
==14004== HEAP SUMMARY:
==14004==     in use at exit: 0 bytes in 0 blocks
==14004==   total heap usage: 482 allocs, 482 frees, 31,142 bytes allocated
==14004==
==14004== All heap blocks were freed -- no leaks are possible
==14004==
==14004== For counts of detected and suppressed errors, rerun with: -v
==14004== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

address@hidden:~$ bash --version
GNU bash, version 4.4.11(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.



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