[Bug c++/101051] [10/11/12 Regression] ICE in splice_late_return_type with trailing return type on a conversion operator, caused by r10-6571

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101051

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here are the testcases all together:

template <class T>
class Foo
{
    constexpr operator T() -> T {}
};

struct S {
  operator int() const -> double;
};

class A { operator auto*() -> int; };