126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
// RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++1z -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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namespace dr2229 { // dr2229: 7
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struct AnonBitfieldQualifiers {
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const unsigned : 1; // expected-error {{anonymous bit-field cannot have qualifiers}}
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volatile unsigned : 1; // expected-error {{anonymous bit-field cannot have qualifiers}}
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const volatile unsigned : 1; // expected-error {{anonymous bit-field cannot have qualifiers}}
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unsigned : 1;
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const unsigned i1 : 1;
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volatile unsigned i2 : 1;
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const volatile unsigned i3 : 1;
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};
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}
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#if __cplusplus >= 201103L
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namespace dr2211 { // dr2211: 8
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void f() {
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int a;
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auto f = [a](int a) { (void)a; }; // expected-error {{a lambda parameter cannot shadow an explicitly captured entity}}
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// expected-note@-1{{variable 'a' is explicitly captured here}}
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auto g = [=](int a) { (void)a; };
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}
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}
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#endif
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namespace dr2292 { // dr2292: 9
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#if __cplusplus >= 201103L
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template<typename T> using id = T;
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void test(int *p) {
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p->template id<int>::~id<int>();
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}
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#endif
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}
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namespace dr2233 { // dr2233: 11
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#if __cplusplus >= 201103L
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template <typename... T>
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void f(int i = 0, T... args) {}
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template <typename... T>
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void g(int i = 0, T... args, T... args2) {}
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template <typename... T>
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void h(int i = 0, T... args, int j = 1) {}
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template <typename... T, typename... U>
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void i(int i = 0, T... args, int j = 1, U... args2) {}
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template <class... Ts>
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void j(int i = 0, Ts... ts) {}
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template <>
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void j<int>(int i, int j) {}
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template
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void j(int, int, int);
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extern template
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void j(int, int, int, int);
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// PR23029
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// Ensure instantiating the templates works.
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void use() {
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f();
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f(0, 1);
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f<int>(1, 2);
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g<int>(1, 2, 3);
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h(0, 1);
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i();
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i(3);
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i<int>(3, 2);
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i<int>(3, 2, 1);
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i<int, int>(1, 2, 3, 4, 5);
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j();
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j(1);
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j(1, 2);
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j<int>(1, 2);
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}
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namespace MultilevelSpecialization {
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template<typename ...T> struct A {
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template <T... V> void f(int i = 0, int (&... arr)[V]);
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};
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template<> template<>
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void A<int, int>::f<1, 1>(int i, int (&arr1a)[1], int (&arr2a)[1]) {}
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// FIXME: I believe this example is valid, at least up to the first explicit
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// specialization, but Clang can't cope with explicit specializations that
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// expand packs into a sequence of parameters. If we ever start accepting
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// that, we'll need to decide whether it's OK for arr1a to be missing its
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// default argument -- how far back do we look when determining whether a
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// parameter was expanded from a pack?
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// -- zygoloid 2020-06-02
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template<typename ...T> struct B {
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template <T... V> void f(int i = 0, int (&... arr)[V]);
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};
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template<> template<int a, int b>
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void B<int, int>::f(int i, int (&arr1)[a], int (&arr2)[b]) {} // expected-error {{does not match}}
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template<> template<>
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void B<int, int>::f<1, 1>(int i, int (&arr1a)[1], int (&arr2a)[1]) {}
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}
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namespace CheckAfterMerging1 {
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template <typename... T> void f() {
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void g(int, int = 0);
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void g(int = 0, T...);
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g();
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}
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void h() { f<int>(); }
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}
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namespace CheckAfterMerging2 {
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template <typename... T> void f() {
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void g(int = 0, T...);
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void g(int, int = 0);
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g();
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}
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void h() { f<int>(); }
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}
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#endif
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} // namespace dr2233
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