Non-gcc compilers don't understand the hardened gcc flags of obfsproxy
It seems like clang does not understand
--param ssp-buffer-size=1 or
-fno-strict-overflow. Maybe there are more compilers out there who don't understand those flags or other flags introduced in #5131 (closed).
Sebastian suggested to specify what security properties we are interested in, and find out how they are turned on in each famous compiler. If a famous compiler does not support the flags we are interested in we should warn.