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Re: Adding a new function to memcpy.c


Thanks. That worked. What is this file string/Versions? Can you tell me more about these files?


From: "Ryan Arnold" <>
To: "Rodrigo Dominguez" <>
Subject: Re: Adding a new function to memcpy.c
Date: Thu, 7 Aug 2008 15:05:12 -0500

On Thu, Aug 7, 2008 at 2:40 PM, Rodrigo Dominguez <> wrote:
> Hi,
> I am trying to create a new library function which I want to call memcpy_TC.
> I want memcpy_TC to be an exact clone of memcpy. I made the corresponding
> modifications to string/memcpy.c, string/string.h and include/string.h to
> include my new function. I also removed sysdeps/.../memcpy.S. However, after
> I build, memcpy_TC is defined as a local symbol in
> $nm ../glibc-obj/ | grep memcpy
> 0006ebc0 t __GI_memcpy
> 0006ec10 t __GI_memcpy_TC
> 0006ebc0 T memcpy
> 0006ec10 t memcpy_TC
> I tracked back the build process and I found that is built from
> libc_pic.os. What I find very strange is that memcpy_TC is defined as a
> global symbol in libc_pic.os. How can it change from global to local during
> the linking of Am I missing something here?

You need to export it in the string/Versions file.


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