Re: [boost] BOOST_NO_EXCEPTIONS

From: Beman Dawes (bdawes_at_[hidden])
Date: 2002-02-13 13:26:48

At 07:34 AM 2/13/2002, John Maddock wrote:
 >
 >>It seems to me that just adding BOOST_NO_EXCEPTIONS isn't enough.  There 

 >>needs to be some documentation that explains:
 >>
 >>   *  Why it is there (EmbeddedC++).
 >>
 >>   *  That boost libraries are not required to support it.
 >>
 >>   *  For boost libraries that do wish to support it, what are they
 >>supposed to do when they detect an error that is documented as throwing 
an
 >>exception?  Do all such errors become undefined behavior in Embedded
 >>C++?  (I'm sorry - I've never used Embedded C++ so don't know what they 
do
 >>about errors which normally would be reported via exception.)
 >
 >Point taken, for the regex code it uses an "always on" assertion - so it
 >aborts if there is some critical failure - there isn't much else it can 
do
 >really (and this was the behaviour I was asked for in this case).  I've
 >added some more docs to the config entry for that macro:
 >
 >"The compiler does not support exception handling (this setting is
 >typically required by many C++ compilers for embedded platforms). Note 
that
 >there is no requirement for boost libraries to honor this configuration
 >setting - indeed doing so may be impossible in some cases. Those 
libraries
 >that do honor this will typically abort if a critical error occurs - you
 >have been warned!"

Good. That makes it clearer.

--Beman