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> C++ incompatibly requires a name for all struct and class declarations

You're right about "enum class", but anonymous classes and structs are perfectly valid in C++:

https://godbolt.org/z/7MbcqhnoK



Try

  struct S { struct { int x; }; };
under -pedantic and you'll get

  warning: ISO C++ prohibits anonymous structs [-Wpedantic]


Pedantic is for the older C++ standard, its not pedantic for the latter e.g c++11, I think this changed.


No, pedantic is for disabling compiler extensions. You still need to explicitly specify a standard.


gcc pedantic ignores the language flag, and clang and intel state they mirror gcc. So pedantic would be not C++11 even if you added that.


Well that blows my mind, I never realized pedantic ignores the language setting. Is this the only case where it does that?




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