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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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// PR c++/90691
// { dg-do compile { target c++11 } }
// { dg-additional-options -Wsign-compare }

struct S {
  int a;

  constexpr S();
  explicit constexpr S(int a_) : a(a_) {}
};

constexpr S b = S(12);

template <const S& e>
bool c(unsigned int d) {
  return d >= e.a;
}

bool test(unsigned int d);
bool test(unsigned int d) {
    return c<b>(d);
}