On a cursory inspection, using rb_block_call for extra_chain_cert
is thread-unsafe. There may be other instances of thread-unsafe
behavior in this method, but one is enough.
* ext/openssl/ossl_ssl.c (ossl_sslctx_setup): document as MT-unsafe
[ruby-core:73803] [Bug #12069]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54097 b2dd03c8-39d4-4d8f-98ff-823fe69b080e