Fix building error for -Werror=unused-value #380
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Compiling trantor in Buildroot raises the following error:
In file included from output/host/include/openssl/ssl.h:30,
from output/build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc:6:
build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc: In member function ‘ssize_t OpenSSLProvider::sendTLSData()’:
output/host/include/openssl/bio.h:629:34: error: value computed is not used [-Werror=unused-value]
629 | # define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
output/build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc:777:9: note: in expansion of macro ‘BIO_reset’
777 | BIO_reset(wbio_);
| ^~~~~~~~~
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
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Compiling trantor in Buildroot raises the following error:
In file included from output/host/include/openssl/ssl.h:30,
from output/build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc:6:
build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc: In member function ‘ssize_t OpenSSLProvider::sendTLSData()’: output/host/include/openssl/bio.h:629:34: error: value computed is not used [-Werror=unused-value]
629 | # define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
output/build/host-drogon-v1.9.11/trantor/trantor/net/inner/tlsprovider/OpenSSLProvider.cc:777:9: note: in expansion of macro ‘BIO_reset’
777 | BIO_reset(wbio_);
| ^~~~~~~~~