From: "Lars Gullik Bjønnes" <larsbj@[...].net> 
> 
>  We are currently compiling LyX without exceptions and are thus
>  required to also compile Boost libs without exceptions. Some of the
>  boost libs already have preprocessor switches to accomplish this, and
>  some don't.
> 
>  LyX does not use every Boost lib in exsistance so this patch will be a
>  bit limited.
> 
>  However... We have decided that whenever a Boost lib would throw we
>  will assert instead. We realize of course that this is not the best
>  solution in all cases, but can be made to work with some extra effort
>  in almost every situation.
> 
>  Anyway, this is the current difference between "LyX Boost" and the
>  Boost CVS for us to accomplish this. The user.hpp are mostly for
>  reference, apart from the BOODT_NO_EH_ASSERT macro, with is modeled on
>  the similar macro in Boost.Regex.

I propose the following alternative to your patch:

* New header boost/throw.hpp:

#ifdef BOOST_NO_EXCEPTIONS

#include <exception> 

void boost_throw(std::exception const & e); // user defined

#else

template<class E>  void boost_throw(E const & e)
{
    throw e;
}

#endif

* shared_count changes:

-         if(use_count_ == 0 && weak_count_ != 0) throw use_count_is_zero();
+         if(use_count_ == 0 && weak_count_ != 0)
::boost_throw(use_count_is_zero());

and similarly for the other occurence:

+#ifndef BOOST_NO_EXCEPTIONS
         try
         {
             pi_ = new counted_base_impl<P, D> (p, d, 1, 1);
@@ -244,6 +248,10 @@
             d(p); // delete p
             throw;
         }
+#else
+        pi_ = new counted_base_impl<P, D> (p, d, 1, 1);
+        if(pi_ == 0) ::boost_throw(std::bad_alloc());
+#endif

Comments?


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