The problem was caused by using the MacPorts version of g++. There are plenty of tickets related to exceptions and Abort Traps in the MP system (and plenty of examples on Google). Using the version of g++ that comes with XCode enabled this problem to go away. Cheers, On 23/07/64 5:59 AM, Kieran Simpson wrote:

I'm trying to use `boost::exception` and have condensed my prototype code down to the example in the Boost exception tutorial (http://www.boost.org/doc/libs/1_47_0/libs/exception/doc/tutorial_transportin...) however when running the code with the `BOOST_THROW_EXCEPTION` macro I get an abort from the program.

#include <iostream> #include

typedef boost::error_info my_info; struct my_error: virtual boost::exception, virtual std::exception { };

void f() { BOOST_THROW_EXCEPTION(my_error() << my_info(42));

// Uncomment the below (and comment the above) for the program to work //throw my_error() << my_info(42); }

int main(int argc, char** argv) { try { f(); } catch(my_error& x) { if(int const* mi = boost::get_error_info(x)) { std::cout << "My info: " << *mi << std::endl; } }

return 0; }

Running the code with the BOOST_THROW_EXCEPTION macro:

$ ./a.out Abort trap

If as the comment says, I swap the code, all is well

$ ./a.out My info: 42

Below is the output from the g++ preprocessor for f()

void f() { ::boost::exception_detail::throw_exception_(my_error() << my_info(42),__PRETTY_FUNCTION__,"main.cpp",14); }

Software versions are:

$ g++ -v Using built-in specs. Target: x86_64-apple-darwin10 Thread model: posix gcc version 4.4.6 (GCC)

$ port list boost boost @1.47.0 devel/boost

I'm on OSX SL using the tools provided by MacPorts. I've double checked the g++ search paths and there's only one copy of the boost hpp files and that's the ones that belong to the aforementioned boost package.

I have no idea why the abort trap is being called. I admit I'm newish to C++.

I've also asked this question on StackOverflow (http://stackoverflow.com/questions/8256874/boost-throw-exception-causing-abo...)

Cheers,