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// { dg-do compile }

// { dg-options "-std=gnu++0x" }

// From N2235

// 4.5.2 semantics

// p 1 constexpr specifier

// objects, static const data

struct A1 { int i; };      // { dg-message "no user-provided default constructor" }

constexpr int i1 = 1024;

constexpr A1 a1 = A1();

// error: not a definition

extern constexpr int i2; // { dg-error "definition" }

// error: missing initializer

constexpr A1 a2; // { dg-error "uninitialized const" }

// error: duplicate cv

const constexpr A1 a3 = A1(); // { dg-error "both .const. and .constexpr. cannot" }

volatile constexpr A1 a4 = A1(); // { dg-error "both .volatile. and .constexpr. cannot" }

// error: on type declaration

constexpr struct pixel

{

  int x;

  int y;

};                   // { dg-error "cannot be used for type declarations" }