A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.
Document number: N3757
Date: 2013-08-30
Support for user-defined exception information and diagnostic information in std::exception
by Emil Dotchevski
Excerpt:
This document proposes extending
std::exceptionto allow exception-neutral contexts to intercept anystd::exceptionobject and store into it arbitrary additional data needed to handle the exception (the propagation of the original exception object can then be resumed by athrowwithout argument.)

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