On 6/17/19 1:09 PM, dariomt--- via Boost wrote:

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2) How can I test proper support for std::current_exception() and std::rethrow_exception() if exceptions are disabled for the test?

You should probably condition your test on BOOST_NO_EXCEPTIONS and make the test no-op when exceptions are disabled.

But that defeats the whole purpose of having tests.

Not really. You would still test the facilities when exceptions are enabled. OTOH, I don't see why would anyone care about these components when exceptions are disabled.

I think I should at least use the type std::exception_ptr, and make sure the functions std::current_exception() and std::rethrow_exception() exist (even if I cannot test that they actually work as expected at runtime).

I think the following should work, and at least the test tests something when exceptions are off:

using std::exception_ptr; auto current = &std::current_exception; auto rethrow = &std::rethrow_exception;

What do you think?

If it works, that would be fine by me. I don't disable exceptions and I don't know whether the standard library components related to exceptions stay available when exceptions are disabled. I wouldn't be surprised if they don't (now or in a future version of the standard library implementation). In any case, as I said, I don't see anyone using these components when exceptions are disabled, so not much point in testing.