59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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using size_t = decltype(sizeof(int));
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struct S {
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constexpr int f(); // expected-warning {{C++14}}
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constexpr int g() const;
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constexpr int h(); // expected-warning {{C++14}}
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int h();
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static constexpr int Sf();
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/*static*/ constexpr void *operator new(size_t) noexcept;
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template<typename T> constexpr T tm(); // expected-warning {{C++14}}
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template<typename T> static constexpr T ts();
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};
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void f(const S &s) {
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s.f();
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s.g();
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int (*Sf)() = &S::Sf;
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int (S::*f)() const = &S::f;
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int (S::*g)() const = &S::g;
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void *(*opNew)(size_t) = &S::operator new;
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int (S::*tm)() const = &S::tm;
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int (*ts)() = &S::ts;
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}
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constexpr int S::f() const { return 0; }
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constexpr int S::g() { return 1; } // expected-warning {{C++14}}
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constexpr int S::h() { return 0; } // expected-warning {{C++14}}
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int S::h() { return 0; }
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constexpr int S::Sf() { return 2; }
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constexpr void *S::operator new(size_t) noexcept { return 0; }
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template<typename T> constexpr T S::tm() { return T(); } // expected-warning {{C++14}}
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template<typename T> constexpr T S::ts() { return T(); }
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namespace std_example {
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class debug_flag {
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public:
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explicit debug_flag(bool);
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constexpr bool is_on() const; // ok (dr1684)
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private:
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bool flag;
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};
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constexpr int bar(int x, int y) // expected-note {{here}}
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{ return x + y + x*y; }
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int bar(int x, int y) // expected-error {{non-constexpr declaration of 'bar' follows constexpr declaration}}
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{ return x * 2 + 3 * y; }
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}
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// The constexpr specifier is allowed for static member functions of non-literal types.
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class NonLiteralClass {
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NonLiteralClass(bool);
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static constexpr bool isDebugFlag();
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};
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