https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99683
--- Comment #1 from Omer Rosler <omer.rosler at gmail dot com> ---
It seems that
Reduced:
template<typename>
struct A
{
constexpr A(int) {}
};
A(int) -> A<int>;
template<A> //template<auto> works fine
struct B
{
template<typename T>
B(T);
};
template<typename T>
B(T) -> B<A{T{}}>; //see below
int main()
{
B t(42);
}
specifying A<T> explicitly also works, it's the deduction that triggers the bug
If the initializer of `A` is not dependent on the template parameter of the
guide (i.e `T`) than the bug isn't showing
