[Bug c++/52869] [DR 1207] "this" not being allowed in noexcept clauses

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52869

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The exception specification seems to be processed too early, before the other
class members are in scope. This slight variation of comment 5 still fails on
trunk:

struct S {
    void g() noexcept(noexcept(f())) { }
    void h() noexcept(noexcept(this->f())) { }
    void f() { }
};

2869.cc:2:32: error: 'f' was not declared in this scope
    2 |     void g() noexcept(noexcept(f())) { }
      |                                ^
52869.cc:3:38: error: 'struct S' has no member named 'f'
    3 |     void h() noexcept(noexcept(this->f())) { }
      |                                      ^