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// PR c++/69315
// { dg-do compile { target c++11 } }
// { dg-options "-O2" }
// Template instantiation and evaluation for folding within
// finish_function may call finish_function recursively.
// Make sure we don't reject or delay that sort of recursion.
template <bool> struct Iter;
struct Arg {
Iter<true> begin();
Iter<true> end();
};
template <bool> struct Iter {
int operator*();
Iter operator++();
template <bool C1, bool C2> friend constexpr bool operator==(Iter<C1>, Iter<C2>);
template <bool C1, bool C2> friend constexpr bool operator!=(Iter<C1>, Iter<C2>);
};
void func(Arg a) {
for (auto ch : a) {
a.begin() == a.end();
}
}
template <bool C1, bool C2> constexpr bool operator==(Iter<C1>, Iter<C2>) {
return true;
}
template <bool C1, bool C2> constexpr bool operator!=(Iter<C1> a, Iter<C2> b) {
return a == b;
}
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