74 lines
1.4 KiB
C++
74 lines
1.4 KiB
C++
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// RUN: %clang_cc1 -verify -std=c++1y %s
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// Example from the standard.
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namespace X {
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void p() {
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q(); // expected-error {{undeclared}}
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extern void q();
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}
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void middle() {
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q(); // expected-error {{undeclared}}
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}
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void q() { /*...*/ }
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void bottom() {
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q();
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}
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}
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int q();
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namespace Test1 {
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void f() {
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extern int a; // expected-note {{previous}}
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int g(void); // expected-note {{previous}}
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}
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double a; // expected-error {{different type: 'double' vs 'int'}}
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double g(); // expected-error {{differ only in their return type}}
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}
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namespace Test2 {
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void f() {
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extern int a; // expected-note {{previous}}
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int g(void); // expected-note {{previous}}
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}
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void h() {
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extern double a; // expected-error {{different type: 'double' vs 'int'}}
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double g(void); // expected-error {{differ only in their return type}}
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}
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}
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namespace Test3 {
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constexpr void (*f())() {
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void h();
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return &h;
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}
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constexpr void (*g())() {
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void h();
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return &h;
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}
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static_assert(f() == g(), "");
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}
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namespace Test4 {
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template<typename T>
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constexpr void (*f())() {
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void h();
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return &h;
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}
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static_assert(f<int>() == f<char>(), "");
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void h();
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static_assert(f<int>() == &h, "");
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}
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namespace Test5 {
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constexpr auto f() -> void (*)() {
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void g();
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struct X {
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friend void g();
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static constexpr auto h() -> void (*)() { return g; }
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};
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return X::h();
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}
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void g();
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static_assert(f() == g, "");
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}
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