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Exception thrown in extern C method #975
Description
Running the test_basic.rb on windows results in the following tests aborting:
test_invalid_address_bind_connect_dst
test_invalid_address_bind_connect_src
The expectation is for the EventMachine_t::ConnectToServer method to throw an exception, and for it to bubble up into Ruby.
I think the issue is that the evma_connect_to_server method link is declared as extern "C", which causes the exception to cross language barriers.
Not sure how to fix it yet, but thought it might be worth a discussion.
I see this has been mentioned before #99
Do we just need to add the -fexceptions option to gcc?
Activity
MSP-Greg commentedon Oct 6, 2022
What version/build of Ruby were you using? I just ran Actions CI in my fork, and all the Windows jobs passed with the exception of 2.5, which was probably an intermittent failure due to a slow CI runner.
ls5302 commentedon Oct 6, 2022
Ruby 3.1 and Eventmachine 1.2,7 (32-bit). The tests I mention have been pended in master.
I'm playing around with the gcc flag and it doesn't appear to make any difference.
What has worked is modifying the em.cpp code to return an error code, rather than throw. The tests now run, and fail due to a error message mismatch which is expected as the "no connection" is text in the eb_raise call.