exfns.tex

\newpage
\abschnitt{Appendix C: \exfns}\label{exfns}

\href{https://github.com/secondlife/3p-boost/blob/nat/exstate/tests/fccurrexc.cpp}{The following program}
illustrates the output of \exfns in cases involving fiber context
switches within a destructor invoked by exception handling, and within a catch
block.

\cppf{fccurrexc}

With fiber-specific exception state, \uncexs never exceeds 1, and \curex
displays:

\cpp{fiber() catch block after: std::current\_exception() = fiber() exception}

and:

\cpp{main() catch block after: std::current\_exception() = main() exception}

Without fiber-specific exception state, \uncexs displays up to 2 (one
exception in \main, one in \cpp{fiber()}), and \curex displays:

\cpp{fiber() catch block after: std::current\_exception() = main() exception}

and:

\cpp{main() catch block after: std::current\_exception() = fiber() exception}