See CWG2558 and CWG2536

CWG2558: Is it intentional that uninitialized subobjects can appear in prvalues returned by constant expressions?
P1331R2 dropped the corresponding restriction, but maybe that wasn't entirely intentional.

  struct A {
    int n;
    consteval A() {}
  };
  constexpr A a;

CWG2536: The variable a is a variable with static storage duration, which previously could not have subobjects with indeterminate value (because of zero-initialization). The status quo wording does permit such indeterminate values. Is that intentional?