Clang reporting multiple consteval usage violations, violations do not appear to be violations?

[mattreecebentley]

Clang is reporting consteval usage violations with the attached version of plf::hive and it's test suite.
I've removed the consteval statements in the plf::hive repo for the moment so that clang can be used.
Output via godbolt here.

Primarily it appears to be objecting to the use of consteval functions in
(a) class constructor member initialization ("cannot take address of consteval function 'default_min_block_capacity' outside of an immediate invocation")
(b) class constructor member initialization default values ("call to consteval function 'plf::hive::default_block_capacity_limits' is not a constant expression")
(c) in assignment to constexpr variables ("call to consteval function 'plf::hive::block_capacity_hard_limits' is not a constant expression")

GCC11 and MSVC 2022 do not see these bugs. If they are bugs on my end, I would like to understand them, as the function return values are always computable at compile-time
plf_hive_prev_version.zip
.

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[llvmbot]

@llvm/issue-subscribers-c-20

[jyknight]

I'm not sure if all of these issues will be solved by the pending patches for #48230, but definitely closely related.

[mattreecebentley]

I've updated the repo ver for various issues, and have removed the consteval statements so people can use it with clang for the moment,
so have altered the original report here and attached the version which still had consteval statements.

[jyknight]

As far as I can tell, the remaining consteval bug reported here, after the other bug was fixed, is error: cannot take address of consteval function 'x' outside of an immediate invocation when the consteval function is template argument dependent, e.g.:

template<typename T>
class Bar {
  consteval static T x() { return 5; }
 public:
  Bar() : a(x()) {}

 private:
  int a;
};

Bar<int> g();

[AaronBallman]

I can confirm @jyknight is correct about that not being accepted when it should.