Except if some policy enforces C++11 or C++14, especially in embedded systems, where compilers might be years behind in following the specs. For example, gcc ha

Except if some policy enforces C++11 or C++14, especially in embedded systems, where compilers might be years behind in following the specs. For example, gcc has (almost) full C++17 support starting from version 8, which might seem old enough to be omnipresent, but still some QNX-based distributions might have stuck with 5.x.