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Re: [Patch] [libstdc++] [C++0x] Export std::string base object move constructor.

From: Paolo Carlini <pcarlini at gmail dot com>
To: dev dot lists at jessamine dot co dot uk
Cc: gcc-patches at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org, jakub at redhat dot com
Date: Tue, 22 Mar 2011 14:40:09 +0100
Subject: Re: [Patch] [libstdc++] [C++0x] Export std::string base object move constructor.
References: <7db3e0ce41aacbeabd8c003deadabb98.squirrel@webmail.plus.net>

Hi,

After a bit of poking around with nm in various objects I determined
that the baseline_symbols files define what should be exported.  The
following grep+sed combo adds the necessary export for any architecture
that exports the C1 constructor symbol.

   grep _ZNSsC1EOSs libstdc++-v3/config/abi/post -R -l | xargs sed -i.bak
'/_ZNSsC2EPKcRKSaIcE/ iFUNC:_ZNSsC2EOSs@@GLIBCXX_3.4.14'

For sure the baseline_symbols files do *not* define what is exported, pre/gnu.ver does, those files are only for checking purposes. Now, I'm traveling and I'm not a position to carefully double check on Linux what you are saying, I'm going to ask Jakub' help here, looks more likely something should be additionally exported @GLIBCXX_3.4.15.

Paolo.

References:
- [Patch] [libstdc++] [C++0x] Export std::string base object move constructor.
  - From: Adam Butcher

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