Designated initializers were added in c++20, I was just looking at a recent change to clang's semantic analysis that warns on the differences between C99 and C+

Designated initializers were added in c++20, I was just looking at a recent change to clang's semantic analysis that warns on the differences between C99 and C++20 designated initializers (Todo: post link when not mobile.) One recent difference I saw was valid in (via GNU C extension) but invalid in c++: struct foo my_foo = ({ init(&my_foo); my_foo; });