On 6/6/19 4:53 PM, dariomt--- via Boost wrote:

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Are there instructions for developers that I've missed?

There are some instructions here:

https://www.boost.org/doc/libs/1_70_0/libs/config/doc/html/boost_config/guid...

Thanks!

I was expecting developer guidelines in the github readme, not in the actual library docs! doh!

I have made a PR #285 and after some trial and error (I only have VS2015 and VS2017 available to test locally) I think I have something.

However, in my test I throw and catch exceptions:

int test() { std::exception_ptr ep; try { throw 42; } catch(...) { ep = std::current_exception(); } try { std::rethrow_exception(ep); } catch(int i) { // return zero on success return i == 42 ? 0 : 1; } return 1; }

But the CI jobs have gcc and clang configured to compile without exception support! And I get errors like:

libs/config/test/boost_no_cxx11_hdr_exception.ipp:22:5: error: cannot use 'throw' with exceptions disabled throw 42; ^ libs/config/test/boost_no_cxx11_hdr_exception.ipp:20:3: error: cannot use 'try' with exceptions disabled try ^

I have two questions:

1) Where are exceptions disabled in the CI jobs? I can't find it in the .travis.yml, but I can see e.g. clang being invoked with -fno-exceptions

It's in the test/Jamfile.v2 file, look for <exception-handling>off.

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.