[boost] Re: Standard C Library and C++ / BOOST

"Klaus Nowikow" <nowikow@decomsys.com> writes:

Reece Dunn wrote: [snip]

...

A trick I use when handling HRESULT error codes is to have a class like this (adapted for int error type):

class errorcheck { [snip] public: inline errorcheck( int ec ): error( ec ) { if( ec < 0 ) throw( *this ); }

Careful. Throwing an exception from a constructor means that the object won't be constructed (i. e., does not exist). So you are throwing a non-existing object here.

Or am I wrong?

You're wrong. *this is copied before it is thrown. Still, the idiom above seems a bit suspicious, unless you somehow prevent derivation from errorcheck. -- Dave Abrahams Boost Consulting www.boost-consulting.com