openssl: clear OpenSSL error queue before return to Ruby
ext/openssl/ossl_x509cert.c (ossl_x509_verify): X509_verify()
family may put errors on 0 return (0 means verification failure).
Clear OpenSSL error queue before return to Ruby. Since the queue is
thread global, remaining errors in the queue can cause an unexpected
error in the next OpenSSL operation. [ruby-core:48284] [Bug #7215]
openssl: clear OpenSSL error queue before return to Ruby
ext/openssl/ossl_x509cert.c (ossl_x509_verify): X509_verify()
family may put errors on 0 return (0 means verification failure).
Clear OpenSSL error queue before return to Ruby. Since the queue is
thread global, remaining errors in the queue can cause an unexpected
error in the next OpenSSL operation. [ruby-core:48284] [Bug #7215]
ext/openssl/ossl_x509crl.c (ossl_x509crl_verify): ditto.
ext/openssl/ossl_x509req.c (ossl_x509req_verify): ditto.
ext/openssl/ossl_x509store.c (ossl_x509stctx_verify): ditto.
ext/openssl/ossl_pkey_dh.c (dh_generate): clear the OpenSSL error
queue before re-raising exception.
ext/openssl/ossl_pkey_dsa.c (dsa_generate): ditto.
ext/openssl/ossl_pkey_rsa.c (rsa_generate): ditto.
ext/openssl/ossl_ssl.c (ossl_start_ssl): ditto.
test/openssl: check that OpenSSL.errors is empty every time after
running a test case.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e