Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #25761 > unrolled thread

undefined reference to symbol '_end'

Back to article view | Back to comp.lang.c

Contents

  undefined reference to symbol '_end' Eric <nospam@nospam.com> - 2012-09-02 20:44 +0000
    Re: undefined reference to symbol '_end' Ian Collins <ian-news@hotmail.com> - 2012-09-03 09:01 +1200
      Re: undefined reference to symbol '_end' Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-09-02 22:43 +0100
    Re: undefined reference to symbol '_end' Keith Thompson <kst-u@mib.org> - 2012-09-02 14:33 -0700
      Re: undefined reference to symbol '_end' Angel <angel+news@spamcop.net> - 2012-09-02 22:07 +0000
    Re: undefined reference to symbol '_end' Vincenzo Mercuri <vincenzo.mercuri@yahoo.it> - 2012-09-03 00:52 +0200

#25761 — undefined reference to symbol '_end'

Hi

I am getting the following linker error, however I do not have any _end 
function or variable in my code.

Can anyone help?

Thanks

/usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined 
reference to symbol '_end'
/lib64/libcom_err.so.2: could not read symbols: Invalid operation
collect2: ld returned 1 exit status

[toc] | [next] | [standalone]

#25765

On 09/ 3/12 08:44 AM, Eric wrote:
> Hi
>
> I am getting the following linker error, however I do not have any _end
> function or variable in my code.
>
> Can anyone help?
>
> Thanks
>
> /usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined
> reference to symbol '_end'
> /lib64/libcom_err.so.2: could not read symbols: Invalid operation
> collect2: ld returned 1 exit status

Something somewhere calls a function called end (the leading underscore 
is added by the compiler).  You don't provide enough information for a 
decent answer, but this often happens when

a) you forget to declare a function
b) your library header doesn't match the actual library on your machine.

-- 
Ian Collins

[toc] | [prev] | [next] | [standalone]

#25772

Ian Collins <ian-news@hotmail.com> writes:

> On 09/ 3/12 08:44 AM, Eric wrote:
>> Hi
>>
>> I am getting the following linker error, however I do not have any _end
>> function or variable in my code.
>>
>> Can anyone help?
>>
>> Thanks
>>
>> /usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined
>> reference to symbol '_end'
>> /lib64/libcom_err.so.2: could not read symbols: Invalid operation
>> collect2: ld returned 1 exit status
>
> Something somewhere calls a function called end (the leading
> underscore is added by the compiler).  You don't provide enough
> information for a decent answer, but this often happens when
>
> a) you forget to declare a function
> b) your library header doesn't match the actual library on your
> machine.

It's being referred to by a library function and one from a module that
relates to memory at that.  I strongly suspect old Unix code that refers
to an extern called end.  New code might refer to it as well, but it
shouldn't!

To the OP: you might try asking in comp.unix.programmer.

-- 
Ben.

[toc] | [prev] | [next] | [standalone]

#25770

Eric <nospam@nospam.com> writes:
> I am getting the following linker error, however I do not have any _end 
> function or variable in my code.
>
> Can anyone help?
>
> Thanks
>
> /usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined 
> reference to symbol '_end'
> /lib64/libcom_err.so.2: could not read symbols: Invalid operation
> collect2: ld returned 1 exit status

I get 145 hits on a Google search for "undefined reference to symbol '_end'".
It's likely one or more of them will point you in the right direction.

It appears to be related to /lib64/libcom_err.so.2, whatever that is.

A good approach is to narrow down your program to the smallest example
that reproduces the problem.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
    Will write code for food.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

[toc] | [prev] | [next] | [standalone]

#25774

On 2012-09-02, Keith Thompson <kst-u@mib.org> wrote:
> Eric <nospam@nospam.com> writes:
>> I am getting the following linker error, however I do not have any _end 
>> function or variable in my code.
>>
>> Can anyone help?
>>
>> Thanks
>>
>> /usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined 
>> reference to symbol '_end'
>> /lib64/libcom_err.so.2: could not read symbols: Invalid operation
>> collect2: ld returned 1 exit status
>
> I get 145 hits on a Google search for "undefined reference to symbol '_end'".
> It's likely one or more of them will point you in the right direction.
>
> It appears to be related to /lib64/libcom_err.so.2, whatever that is.

It's a library that was originally part of the ext2/ext3/ext4 filesystem
utilities, but is used by some other filesystem-related utilities as
well.  So my guess is that the threat starter is on some brand of Linux.


-- 
"C provides a programmer with more than enough rope to hang himself.
C++ provides a firing squad, blindfold and last cigarette."
- seen in comp.lang.c

[toc] | [prev] | [next] | [standalone]

#25781

Il 9/2/2012 10:44 PM, Eric ha scritto:
> Hi
>
> I am getting the following linker error, however I do not have any _end
> function or variable in my code.
>
> Can anyone help?
>
> Thanks
>
> /usr/bin/ld: /usr/lib64/libphobos2.a(memory_350_620.o): undefined
> reference to symbol '_end'
> /lib64/libcom_err.so.2: could not read symbols: Invalid operation
> collect2: ld returned 1 exit status
>

Phobos is the standard runtime library that comes with the D language
compiler "dmd". You should ask in another newsgroup:
http://www.digitalmars.com/NewsGroup.html

However, I found this thread where quite the same error message is
reported, the suggested solution could apply to your case as well:
http://goo.gl/eVVMo

-- 
Vincenzo Mercuri

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.c

csiph-web