3 Jun 2010 redi   » (Master)

More than two years ago I said I was going to work on std::regex for libstdc++. I found a few bugs, but as the current implementation is skeletal and doesn't do anything I didn't bother checking most of my changes in. Nothing concrete came of that until a couple of weeks ago when I went back to it because I've been reviewing the Regular expressions library clause of the C++ Final Committee Draft. There are some implied preconditions which should be explicit, otherwise it's very easy to stray into nasal demon territory, which is pretty much guaranteed to format your hard drive and launch missiles. I need to write up a proposal to fix that, as well as undo the problems introduced to the definitions of Bitmask Types in the standard library. When I've done that I might actually apply my fixes to the skeletal regex code in libstdc++.

I'm also working on adding nullptr support to libstdc++, based on work done by Magnus Fromreide who added support for the new keyword to g++. I've recently made a couple of changes to g++ myself, improving some diagnostics that used non-standard terms such as "abstract functions" and "base initializers". I've also hacked g++ to warn about POD members which aren't initialised in the constructor's member initializer list, but that hack is far from production quality and might never get checked in.

I'm also supposed to be reviewing Scott Meyers' Overview of the New C++ (C++0x) for the ACCU Book Reviews. I haven't made much progress on that and might not make the next publication deadline for CVu. As you'd expect from Scott Meyers, it's erudite and clearly written and I recommend it to anyone interested in the new C++. It's also DRM-free, which is nice.

I don't know if the advogato diary entry form has changed or if it's because I'm now using Chromium on my netbook, but it's impossible to post more than 60 chars, which buggers up URLs.

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