forked from OSchip/llvm-project
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
// 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 std {
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__extension__ typedef __SIZE_TYPE__ size_t;
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template<typename T> struct initializer_list {
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const T *p; size_t n;
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initializer_list(const T *p, size_t n);
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};
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}
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namespace dr1004 { // dr1004: 5
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template<typename> struct A {};
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template<typename> struct B1 {};
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template<template<typename> class> struct B2 {};
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template<typename X> void f(); // expected-note {{[with X = dr1004::A<int>]}}
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template<template<typename> class X> void f(); // expected-note {{[with X = A]}}
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template<template<typename> class X> void g(); // expected-note {{[with X = A]}}
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template<typename X> void g(); // expected-note {{[with X = dr1004::A<int>]}}
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struct C : A<int> {
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B1<A> b1a;
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B2<A> b2a;
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void h() {
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f<A>(); // expected-error {{ambiguous}}
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g<A>(); // expected-error {{ambiguous}}
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}
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};
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// This example (from the standard) is actually ill-formed, because
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// name lookup of "T::template A" names the constructor.
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// FIXME: Only issue one diagnostic for this case.
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template<class T, template<class> class U = T::template A> struct Third { }; // expected-error 2{{is a constructor name}}
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Third<A<int> > t; // expected-note {{in instantiation of}} expected-note {{while substituting}} expected-note {{while checking}}
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}
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namespace dr1048 { // dr1048: 3.6
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struct A {};
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const A f();
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A g();
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typedef const A CA;
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#if __cplusplus >= 201103L
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// ok: we deduce non-const A in each case.
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A &&a = [] (int n) {
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while (1) switch (n) {
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case 0: return f();
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case 1: return g();
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case 2: return A();
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case 3: return CA();
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}
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} (0);
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#endif
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}
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namespace dr1054 { // dr1054: no
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// FIXME: Test is incomplete.
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struct A {} volatile a;
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void f() {
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// FIXME: This is wrong: an lvalue-to-rvalue conversion is applied here,
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// which copy-initializes a temporary from 'a'. Therefore this is
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// ill-formed because A does not have a volatile copy constructor.
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// (We might want to track this aspect under dr1383 instead?)
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a; // expected-warning {{assign into a variable to force a volatile load}}
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}
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}
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namespace dr1070 { // dr1070: 3.5
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#if __cplusplus >= 201103L
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struct A {
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A(std::initializer_list<int>);
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};
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struct B {
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int i;
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A a;
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};
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B b = {1};
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struct C {
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std::initializer_list<int> a;
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B b;
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std::initializer_list<double> c;
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};
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C c = {};
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#endif
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}
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