[Bug c++/92441] [10 regression] ICE: in strip_typedefs, at cp/tree.c:1681

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92441

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|WAITING                     |NEW
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
template <typename> void foo ();
template <typename, typename> struct A;
template <typename T, typename U = decltype(foo<T>)> using B = U;
template <typename T> using C = B<T>;
template <typename T> A<C<T>,int> a;
-fconcepts isn't needed.
Started with r277281.
Can't reproduce with current trunk though, only r278068, so most likely dup of
PR92206.