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Re: [v3] Fix second half of libstdc++/6745

From: Paolo Carlini <pcarlini at unitus dot it>
To: Jonathan Lennox <lennox at cs dot columbia dot edu>
Cc: libstdc++ at gcc dot gnu dot org, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>,bkoz <bkoz at redhat dot com>
Date: Tue, 19 Nov 2002 02:16:35 +0100
Subject: Re: [v3] Fix second half of libstdc++/6745
References: <3DD948CF.1090103@unitus.it> <15833.20758.882879.278207@grandcentral.cs.columbia.edu> <3DD954D8.20107@unitus.it> <15833.22883.141927.542243@grandcentral.cs.columbia.edu> <3DD95D53.4060300@unitus.it> <15833.36098.995266.11235@bart.cs.columbia.edu>

Jonathan Lennox wrote:

I want to study this in more detail but basically I believe you are right: we have a performance issue in such cases. Could you possibly work
out a patch along the lines which you suggested?
Not adding new public members to basic_filebuf, however...
Is making __copy_streambufs a friend of basic_filebuf acceptable?

Probably...

Also, I'm still not clear on whether it's acceptable to use dynamic_cast<>
in libstdc++.

Nice question... In fact, in the current codebase there aren't, I'm not sure why, however.

Benjamin?

Ciao, Paolo.

Follow-Ups:
- Re: [v3] Fix second half of libstdc++/6745
  - From: Jonathan Lennox

References:
- Re: [v3] Fix second half of libstdc++/6745
  - From: Jonathan Lennox
- Re: [v3] Fix second half of libstdc++/6745
  - From: Paolo Carlini
- Re: [v3] Fix second half of libstdc++/6745
  - From: Jonathan Lennox
- Re: [v3] Fix second half of libstdc++/6745
  - From: Paolo Carlini
- Re: [v3] Fix second half of libstdc++/6745
  - From: Jonathan Lennox

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