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From: Joseph Myers <joseph@codesourcery.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: <libc-alpha@sourceware.org>
Subject: Re: [PATCH v2 3/3] Consolidate posix_fadvise implementations
Date: Wed, 12 Oct 2016 15:39:00 -0000	[thread overview]
Message-ID: <alpine.DEB.2.20.1610121527340.10909@digraph.polyomino.org.uk> (raw)
In-Reply-To: <086eefb0-907f-7dea-0af6-b3f4b15eddc7@linaro.org>

On Wed, 12 Oct 2016, Adhemerval Zanella wrote:

> For some reason I am not seeing this issue with my mips64n64 toolchain
> (gcc 5.3.1, binutils 2.26.0.20160331).

I was using GCC 5.4.1 20160810 and binutils 2.27.51.20160810.  I've now 
updated to today's GCC 5 branch and binutils master, and still see the 
same issue, in a clean build from scratch.

The error is complaining about libc.so when linking sotruss-lib.so.  
libc.so has (readelf --dyn-syms)

   262: 000000000010b950    28 FUNC    GLOBAL DEFAULT   12 posix_fadvise64@GLIBC_2.2
   417: 000000000010b950    28 FUNC    WEAK   DEFAULT   12 posix_fadvise64@@GLIBC_2.2
  1505: 000000000010b950    28 FUNC    GLOBAL DEFAULT   12 posix_fadvise64@@GLIBC_2.3.3

that is, two separate definitions at version GLIBC_2.2.  It looks to me 
like sysdeps/unix/sysv/linux/posix_fadvise64.c would create a 
posix_fadvise64 weak_alias, while 
sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c then adds 
compat_symbol / versioned_symbol calls.  If a symbol is being created with 
explicit versioning, direct weak_alias / strong_alias calls for it should 
be disabled.

-- 
Joseph S. Myers
joseph@codesourcery.com

  reply	other threads:[~2016-10-12 15:39 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-28  0:15 [PATCH v2 1/3] Consolidate fallocate{64} implementations Adhemerval Zanella
2016-09-28  0:15 ` [PATCH v2 2/3] Consolidate posix_fallocate{64} implementations Adhemerval Zanella
2016-10-05 17:02   ` Siddhesh Poyarekar
2016-10-05 17:51     ` Adhemerval Zanella
2016-10-05 18:19       ` Siddhesh Poyarekar
2016-09-28  0:15 ` [PATCH v2 3/3] Consolidate posix_fadvise implementations Adhemerval Zanella
2016-10-05 17:15   ` Siddhesh Poyarekar
2016-10-06 20:50     ` Adhemerval Zanella
2016-10-11 23:47     ` Joseph Myers
2016-10-12 13:51       ` Adhemerval Zanella
2016-10-12 15:39         ` Joseph Myers [this message]
2016-10-12 16:05           ` Adhemerval Zanella
2016-10-12 16:11             ` Joseph Myers
2016-10-12 16:14               ` Adhemerval Zanella
2016-09-30  0:51 ` [PATCH v2 1/3] Consolidate fallocate{64} implementations Siddhesh Poyarekar
2016-10-04 15:07   ` Adhemerval Zanella
2016-10-05  6:54     ` Siddhesh Poyarekar
2016-10-05 14:49       ` Adhemerval Zanella
2016-10-05 16:50         ` Siddhesh Poyarekar
2016-10-17 14:15     ` Andreas Schwab
2016-10-17 14:20       ` Andreas Schwab
2016-10-17 15:52         ` Andreas Schwab
2016-10-17 15:57           ` Christoph Hellwig
2016-10-17 18:59             ` Adhemerval Zanella
2016-10-18  9:55               ` Florian Weimer
2016-10-18  7:45             ` Andreas Schwab
2016-10-17 14:44     ` Andreas Schwab

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