Hi, we got some confusion, if C++11 support is considered experimental in GCC 4.8.5. The manual states that 4.8.1 implements the standard fully, while https://gcc.gnu.org/gcc-4.8/cxx0x_status.html states, in the head line, that the support is experimental. I am asking about this 'ancient' release, as it is the standard compiler in RHEL 7.5 and we are wondering, if it is safe to turn on C++11 in an operational system. Greetings Janosch