121 lines
2.8 KiB
C++
121 lines
2.8 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
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struct one { char c; };
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struct two { char c[2]; };
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namespace reference {
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struct A {
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int i1, i2;
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};
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void single_init() {
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const int &cri1a = {1};
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const int &cri1b{1};
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int i = 1;
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int &ri1a = {i};
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int &ri1b{i};
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int &ri2 = {1}; // expected-error {{cannot bind to an initializer list temporary}}
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A a{1, 2};
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A &ra1a = {a};
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A &ra1b{a};
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}
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void reference_to_aggregate() {
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const A &ra1{1, 2};
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A &ra2{1, 2}; // expected-error {{cannot bind to an initializer list temporary}}
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const int (&arrayRef)[] = {1, 2, 3};
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static_assert(sizeof(arrayRef) == 3 * sizeof(int), "bad array size");
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}
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struct B {
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int i1;
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};
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void call() {
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one f(const int&);
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f({1});
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one g(int&); // expected-note {{passing argument}}
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g({1}); // expected-error {{cannot bind to an initializer list temporary}}
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int i = 0;
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g({i});
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void h(const B&);
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h({1});
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void a(B&); // expected-note {{passing argument}}
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a({1}); // expected-error {{cannot bind to an initializer list temporary}}
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B b{1};
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a({b});
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}
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void overloading() {
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one f(const int&);
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two f(const B&);
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// First is identity conversion, second is user-defined conversion.
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static_assert(sizeof(f({1})) == sizeof(one), "bad overload resolution");
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one g(int&);
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two g(const B&);
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static_assert(sizeof(g({1})) == sizeof(two), "bad overload resolution");
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one h(const int&);
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two h(const A&);
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static_assert(sizeof(h({1, 2})) == sizeof(two), "bad overload resolution");
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}
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void edge_cases() {
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// FIXME: very poor error message
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int const &b({0}); // expected-error {{could not bind}}
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}
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}
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namespace PR12182 {
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void f(int const(&)[3]);
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void g() {
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f({1, 2});
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}
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}
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namespace PR12660 {
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const int &i { 1 };
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struct S { S(int); } const &s { 2 };
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}
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namespace b7891773 {
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typedef void (*ptr)();
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template <class T> void f();
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int g(const ptr &);
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int k = g({ f<int> });
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}
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namespace inner_init {
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struct A { int n; };
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struct B { A &&r; };
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B b1 { 0 }; // expected-error {{reference to type 'inner_init::A' could not bind to an rvalue of type 'int'}}
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B b2 { { 0 } };
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B b3 { { { 0 } } }; // expected-warning {{braces around scalar init}}
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struct C { C(int); };
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struct D { C &&r; };
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D d1 { 0 }; // ok, 0 implicitly converts to C
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D d2 { { 0 } }; // ok, { 0 } calls C(0)
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D d3 { { { 0 } } }; // ok, { { 0 } } calls C({ 0 })
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D d4 { { { { 0 } } } }; // expected-warning {{braces around scalar init}}
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struct E { explicit E(int); }; // expected-note 2{{here}}
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struct F { E &&r; };
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F f1 { 0 }; // expected-error {{could not bind to an rvalue of type 'int'}}
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F f2 { { 0 } }; // expected-error {{chosen constructor is explicit}}
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F f3 { { { 0 } } }; // expected-error {{chosen constructor is explicit}}
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}
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