gcc-4.9/gcc/testsuite/g++.dg/cpp0x/constexpr-default-ctor.C


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// { dg-do compile { target c++11 } }

struct A {
  int i;
  constexpr A():i(42) { };
};
struct B: A { };
constexpr int f(B b) { return b.i; }

struct C { C(); };	       // { dg-message "calls non-constexpr" }
struct D: C { };	       // { dg-message "no constexpr constructor" }
constexpr int g(D d) { return 42; } // { dg-error "invalid type" }