_IO_THROW

[Jason Merrill]

>>>>> Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> writes:

> Now that exceptions in C++ are basically working should _IO_THROW be
> enabled in libio?

Makes sense.

> The only problem i have is that i have no idea what class xmsg should be,
> which is used as base class for ios::throw_failure.

See 

  http://www.cygnus.com/misc/wp/dec96pub/lib-iostreams.html#lib.ios::failure

Jason