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2012-10-10 Paolo Carlini <paolo.carlini@oracle.com> * include/std/type_traits (__do_common_type_impl): Revert for now LWG 2141-related change. * testsuite/20_util/common_type/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc: Adjust. From-SVN: r192308