зеркало из https://github.com/microsoft/clang-1.git
60 строки
1.4 KiB
C++
60 строки
1.4 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
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void fn() = default; // expected-error {{only special member}}
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struct foo {
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void fn() = default; // expected-error {{only special member}}
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foo() = default;
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foo(const foo&) = default;
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foo(foo&&) = default;
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foo& operator = (const foo&) = default;
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foo& operator = (foo&&) = default;
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~foo() = default;
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};
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struct bar {
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bar();
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bar(const bar&);
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bar(bar&&);
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bar& operator = (const bar&);
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bar& operator = (bar&&);
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~bar();
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};
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bar::bar() = default;
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bar::bar(const bar&) = default;
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bar::bar(bar&&) = default;
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bar& bar::operator = (const bar&) = default;
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bar& bar::operator = (bar&&) = default;
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bar::~bar() = default;
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static_assert(__is_trivial(foo), "foo should be trivial");
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static_assert(!__has_trivial_destructor(bar), "bar's destructor isn't trivial");
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static_assert(!__has_trivial_constructor(bar),
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"bar's default constructor isn't trivial");
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static_assert(!__has_trivial_copy(bar), "bar has no trivial copy");
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static_assert(!__has_trivial_assign(bar), "bar has no trivial assign");
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void tester() {
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foo f, g(f);
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bar b, c(b);
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f = g;
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b = c;
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}
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template<typename T> struct S : T {
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constexpr S() = default;
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constexpr S(const S&) = default;
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constexpr S(S&&) = default;
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};
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struct lit { constexpr lit() {} };
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S<lit> s_lit; // ok
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S<bar> s_bar; // ok
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struct Friends {
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friend S<bar>::S();
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friend S<bar>::S(const S&);
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friend S<bar>::S(S&&);
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};
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