[Boost-users] Re: Guidelines for effective exception usage

From: David Abrahams (dave_at_[hidden])
Date: 2004-08-23 15:55:38

Jeff Holle <jeff.holle_at_[hidden]> writes:

> My two cents of the referenced html page.
>
> Not placing attributes like string into an exception class only makes
> sense if the exception being thrown has
> something to do with a memory starvation situation.
>
> For a lot of exception types that I can think of this is not the case.
>
> As an example of this std::runtime_error often has a string attribute
> and this is perfectly fine.

No it is not.  Even if you aren't throwing due to memory starvation,
you could run out of memory during unwinding, when the exception is
copied.  That leads you directly to terminate().  Do not pass Go; do
not collect $200.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com