[Bug c++/101164] slow compilation for huge classes (>200k member variables)

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101164

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
For example, the C++ front end has to be prepared to handle this:

struct S {
  int i;
  decltype(i) j;
  int k[sizeof(i)];
};

The C++ compiler has to keep track of every name from its point of declaration,
in case it's used in later member declarations.