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This patch finishes off the work started here: http://gcc.gnu.org/ml/libstdc++/2009-05/msg00127.html With this, all test logic is abstracted from the instantiating type and available to be used by both std::list and ext::list. There is no functional difference or change in reported test results. The move from self-standing test files to combined header + source is new for libstdc++, although certainly a lot of testsuite logic is in testsuite/util already so I don't think this is a massive departure. If there are objections or comments I'd like to hear them. This seems like a workable design. An alternate approach was more meta-programming inspired and just slammed typelists of std::list and variant-types into the 23_container/list harness and test cases. I judged this approach lacking, as: 1) harder to separate out the deps for individual containers. 2) requires just as much modification. 3) added complexity of dispatch machinery. I'm certainly willing to entertain other proposals, and show how this is used in a non-theoretical sense. The plan is to use this approach for the rest of the standard container types. But to convert the containers to this approach such that this is a full transition. Then, ext/vstring could re-use large parts of std::string (Paolo, your thoughts appreciated), the map/set optimizations that Janis/Michael could be integrated and tested in a separate container type, an alternate container implementations for C++0x or that use C++0x atomics can be more prototyped and tested fully without duplication. In addition, I'm hoping to use these kinds of techniques in C++0x atomics testing for shared memory. -benjamin
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