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81 lines
2.6 KiB
81 lines
2.6 KiB
4 months ago
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// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++1z %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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namespace dr1213 { // dr1213: 7
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#if __cplusplus >= 201103L
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using T = int[3];
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int &&r = T{}[1];
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using T = decltype((T{}));
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using U = decltype((T{}[2]));
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using U = int &&;
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// Same thing but in a case where we consider overloaded operator[].
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struct ConvertsToInt {
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operator int();
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};
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struct X { int array[1]; };
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using U = decltype(X().array[ConvertsToInt()]);
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// We apply the same rule to vector subscripting.
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typedef int V4Int __attribute__((__vector_size__(sizeof(int) * 4)));
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typedef int EV4Int __attribute__((__ext_vector_type__(4)));
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using U = decltype(V4Int()[0]);
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using U = decltype(EV4Int()[0]);
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#endif
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}
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namespace dr1250 { // dr1250: 3.9
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struct Incomplete;
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struct Base {
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virtual const Incomplete *meow() = 0;
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};
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struct Derived : Base {
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virtual Incomplete *meow();
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};
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}
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namespace dr1265 { // dr1265: 5
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#if __cplusplus >= 201103L
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auto a = 0, b() -> int; // expected-error {{declaration with trailing return type must be the only declaration in its group}}
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auto b() -> int, d = 0; // expected-error {{declaration with trailing return type must be the only declaration in its group}}
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auto e() -> int, f() -> int; // expected-error {{declaration with trailing return type must be the only declaration in its group}}
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#endif
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#if __cplusplus >= 201402L
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auto g(), h = 0; // expected-error {{function with deduced return type must be the only declaration in its group}}
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auto i = 0, j(); // expected-error {{function with deduced return type must be the only declaration in its group}}
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auto k(), l(); // expected-error {{function with deduced return type must be the only declaration in its group}}
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#endif
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}
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namespace dr1295 { // dr1295: 4
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struct X {
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unsigned bitfield : 4;
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};
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X x = {1};
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unsigned const &r1 = static_cast<X &&>(x).bitfield; // expected-error 0-1{{C++11}}
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unsigned const &r2 = static_cast<unsigned &&>(x.bitfield); // expected-error 0-1{{C++11}}
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template<unsigned &r> struct Y {};
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Y<x.bitfield> y;
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#if __cplusplus <= 201402L
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// expected-error@-2 {{does not refer to any declaration}} expected-note@-3 {{here}}
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#else
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// expected-error@-4 {{refers to subobject}}
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#endif
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#if __cplusplus >= 201103L
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const unsigned other = 0;
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using T = decltype(true ? other : x.bitfield);
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using T = unsigned;
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#endif
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}
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