boost::exception - how to print details?

Question

I have such codein my program:

catch (boost::exception& ex) {
    // error handling
}

How can I print details? Error message, stacktrace etc.?

Well, judging from the documentation, `boost::exception`, which is meant to be a base class, doesn't seem to have any actual exception information. Did you have a look at `boost::get_error_info`? I have no idea if that'll help. You could also check out `boost::diagnostic_information`. I only used the `std::exception`s so far. — thokra, Nov 29 '13 at 10:25

score 6 · Answer 1 · edited Feb 24 '17 at 09:03

6

You can use boost::diagnostic_information() to get the actual error messages and origin of the exception. i.e.

catch (const boost::exception& ex) {
    // error handling
    std::cerr << boost::diagnostic_information(ex);
}

edited Feb 24 '17 at 09:03

RiaD

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answered Nov 29 '13 at 10:25

Constantin

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chwarr · Accepted Answer · 2020-06-09T18:47:19.813

For something as generic as a boost::exception, I think you are looking for the boost::diagnostic_information function to get a niceish string representation.

#include <boost/exception/diagnostic_information.hpp>

catch (const boost::exception& ex) {
    // error handling
    std::string info = boost::diagnostic_information(ex);
    log_exception(info); // some logging function you have
}

To get the stack for an exception, I'd start with the StackOverflow question C++ display stack trace on exception.

boost::exception - how to print details?

2 Answers2