1160 lines
34 KiB
C++
1160 lines
34 KiB
C++
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// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
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// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
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// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
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// RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
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// RUN: %clang_cc1 -std=c++20 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors -fno-spell-checking
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namespace std {
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struct type_info {};
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__extension__ typedef __SIZE_TYPE__ size_t;
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} // namespace std
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namespace dr601 { // dr601: yes
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#if __cplusplus >= 201103L
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#define MAX __LLONG_MAX__
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#else
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#define MAX __LONG_MAX__
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#endif
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#if 0x8000 < -1
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#error 0x8000 should be signed
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#endif
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#if MAX > 0xFFFFFFFF && 0x80000000 < -1
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#error 0x80000000 should be signed
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#endif
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#if __INT_MAX__ == 0x7FFFFFFF
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_Static_assert(0x80000000 < -1, "0x80000000 should be unsigned"); // expected-error {{C11}}
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#endif
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#if MAX > 0xFFFFFFFFFFFFFFFF && 0x8000000000000000 < -1
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#error 0x8000000000000000 should be signed
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#endif
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#if __cplusplus >= 201103L && __LLONG_MAX__ == 0x7FFFFFFFFFFFFFFF
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static_assert(0x8000000000000000 < -1, "0x8000000000000000 should be unsigned"); // expected-error {{C11}}
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#endif
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#undef MAX
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}
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namespace dr602 { // dr602: yes
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template<class T> struct A {
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template<class U> friend struct A;
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};
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template<class T> struct B {
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class C {
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template<class U> friend struct B;
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typedef int type;
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};
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typename C::type ct; // ok, befriended
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};
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B<int> b;
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}
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namespace dr603 { // dr603: yes
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template<unsigned char> struct S {};
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typedef S<'\001'> S1;
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typedef S<(1ul << __CHAR_BIT__) + 1> S1;
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#if __cplusplus >= 201103L
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// expected-error@-2 {{cannot be narrowed}}
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#endif
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}
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// dr604: na
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// dr605 needs IRGen test
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namespace dr606 { // dr606: yes
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#if __cplusplus >= 201103L
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template<typename T> struct S {};
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template<typename T> void f(S<T> &&); // expected-note {{expects an rvalue}}
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template<typename T> void g(T &&);
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template<typename T> void h(const T &&); // expected-note {{expects an rvalue}}
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void test(S<int> s) {
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f(s); // expected-error {{no match}}
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g(s);
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h(s); // expected-error {{no match}}
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g(test);
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h(test); // ok, an rvalue reference can bind to a function lvalue
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}
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#endif
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}
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namespace dr608 { // dr608: yes
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struct A { virtual void f(); };
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struct B : A {};
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struct C : A { void f(); };
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struct D : B, C {};
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}
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int dr610[-0u == 0u ? 1 : -1]; // dr610: yes
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namespace dr611 { // dr611: yes
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int k;
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struct S { int &r; } s = { k ? k : k };
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}
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// dr612: na
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namespace dr613 { // dr613: yes c++11
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// see also n2253
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struct A { int n; static void f(); };
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int f(int);
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struct B { virtual void f(); };
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B &g(int);
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int an1 = sizeof(A::n);
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int an2 = sizeof(A::n + 1); // valid per dr850
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int an3 = sizeof A::n;
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int an4 = sizeof(f(A::n));
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int an5 = sizeof(g(A::n));
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const std::type_info &an6 = typeid(A::n);
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const std::type_info &an7 = typeid(A::n + 1);
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const std::type_info &an8 = typeid(f(A::n));
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const std::type_info &an9 = typeid(g(A::n)); // expected-error {{non-static}}
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#if __cplusplus < 201103L
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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// expected-error@-10 {{non-static}}
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#endif
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void A::f() {
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int an1 = sizeof n;
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const std::type_info &an2 = typeid(n + 1);
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#if __cplusplus < 201103L
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// expected-error@-3 {{static}}
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// expected-error@-3 {{static}}
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#endif
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const std::type_info &an3 = typeid(g(n)); // expected-error {{static}}
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}
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}
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int dr614_a[(-1) / 2 == 0 ? 1 : -1]; // dr614: yes
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int dr614_b[(-1) % 2 == -1 ? 1 : -1];
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namespace dr615 { // dr615: yes
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int f();
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static int n = f();
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}
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namespace dr616 { // dr616: 4
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#if __cplusplus >= 201103L
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struct S { int n; } s;
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S f();
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using T = decltype((S().n));
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using T = decltype((static_cast<S&&>(s).n));
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using T = decltype((f().n));
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using T = decltype(S().*&S::n);
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using T = decltype(static_cast<S&&>(s).*&S::n);
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using T = decltype(f().*&S::n);
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using T = int&&;
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using U = decltype(S().n);
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using U = decltype(static_cast<S&&>(s).n);
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using U = int;
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#endif
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}
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namespace dr618 { // dr618: yes
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#if (unsigned)-1 > 0
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#error wrong
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#endif
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}
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namespace dr619 { // dr619: yes
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extern int x[10];
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struct S { static int x[10]; };
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int x[];
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_Static_assert(sizeof(x) == sizeof(int) * 10, ""); // expected-error {{C11}}
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extern int x[];
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_Static_assert(sizeof(x) == sizeof(int) * 10, ""); // expected-error {{C11}}
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int S::x[];
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_Static_assert(sizeof(S::x) == sizeof(int) * 10, ""); // expected-error {{C11}}
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void f() {
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extern int x[];
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sizeof(x); // expected-error {{incomplete}}
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}
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}
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// dr620: dup 568
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namespace dr621 {
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template<typename T> T f();
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template<> int f() {} // expected-note {{previous}}
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template<> int f<int>() {} // expected-error {{redefinition}}
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}
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// dr623: na
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// FIXME: Add documentation saying we allow invalid pointer values.
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// dr624 needs an IRGen check.
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namespace dr625 { // dr625: yes
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template<typename T> struct A {};
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A<auto> x = A<int>(); // expected-error {{'auto' not allowed in template argument}} expected-error 0-1{{extension}}
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void f(int);
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void (*p)(auto) = f; // expected-error {{'auto' not allowed in function prototype}} expected-error 0-1{{extension}}
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}
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namespace dr626 { // dr626: yes
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#define STR(x) #x
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char c[2] = STR(c); // ok, type matches
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wchar_t w[2] = STR(w); // expected-error {{initializing wide char array with non-wide string literal}}
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}
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namespace dr627 { // dr627: yes
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void f() {
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true a = 0; // expected-error +{{}} expected-warning {{unused}}
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}
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}
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// dr628: na
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namespace dr629 { // dr629: yes
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typedef int T;
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int n = 1;
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void f() {
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auto T = 2;
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#if __cplusplus < 201103L
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// expected-error@-2 {{expected unqualified-id}}
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#else
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// expected-note@-4 {{previous}}
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#endif
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auto T(n);
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#if __cplusplus >= 201103L
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// expected-error@-2 {{redefinition of 'T'}}
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#endif
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}
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}
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namespace dr630 { // dr630: yes
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const bool MB_EQ_WC =
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' ' == L' ' && '\t' == L'\t' && '\v' == L'\v' && '\r' == L'\r' &&
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'\n' == L'\n' && //
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'a' == L'a' && 'b' == L'b' && 'c' == L'c' && 'd' == L'd' && 'e' == L'e' &&
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'f' == L'f' && 'g' == L'g' && 'h' == L'h' && 'i' == L'i' && 'j' == L'j' &&
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'k' == L'k' && 'l' == L'l' && 'm' == L'm' && 'n' == L'n' && 'o' == L'o' &&
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'p' == L'p' && 'q' == L'q' && 'r' == L'r' && 's' == L's' && 't' == L't' &&
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'u' == L'u' && 'v' == L'v' && 'w' == L'w' && 'x' == L'x' && 'y' == L'y' &&
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'z' == L'z' && //
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'A' == L'A' && 'B' == L'B' && 'C' == L'C' && 'D' == L'D' && 'E' == L'E' &&
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'F' == L'F' && 'G' == L'G' && 'H' == L'H' && 'I' == L'I' && 'J' == L'J' &&
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'K' == L'K' && 'L' == L'L' && 'M' == L'M' && 'N' == L'N' && 'O' == L'O' &&
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'P' == L'P' && 'Q' == L'Q' && 'R' == L'R' && 'S' == L'S' && 'T' == L'T' &&
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'U' == L'U' && 'V' == L'V' && 'W' == L'W' && 'X' == L'X' && 'Y' == L'Y' &&
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'Z' == L'Z' && //
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'0' == L'0' && '1' == L'1' && '2' == L'2' && '3' == L'3' && '4' == L'4' &&
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'5' == L'5' && '6' == L'6' && '7' == L'7' && '8' == L'8' &&
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'9' == L'9' && //
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'_' == L'_' && '{' == L'{' && '}' == L'}' && '[' == L'[' && ']' == L']' &&
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'#' == L'#' && '(' == L'(' && ')' == L')' && '<' == L'<' && '>' == L'>' &&
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'%' == L'%' && ':' == L':' && ';' == L';' && '.' == L'.' && '?' == L'?' &&
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'*' == L'*' && '+' == L'+' && '-' == L'-' && '/' == L'/' && '^' == L'^' &&
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'&' == L'&' && '|' == L'|' && '~' == L'~' && '!' == L'!' && '=' == L'=' &&
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',' == L',' && '\\' == L'\\' && '"' == L'"' && '\'' == L'\'';
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#if __STDC_MB_MIGHT_NEQ_WC__
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#ifndef __FreeBSD__ // PR22208, FreeBSD expects us to give a bad (but conforming) answer here.
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_Static_assert(!MB_EQ_WC, "__STDC_MB_MIGHT_NEQ_WC__ but all basic source characters have same representation"); // expected-error {{C11}}
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#endif
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#else
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_Static_assert(MB_EQ_WC, "!__STDC_MB_MIGHT_NEQ_WC__ but some character differs"); // expected-error {{C11}}
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#endif
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}
|
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||
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// dr631: na
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namespace dr632 { // dr632: yes
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struct S { int n; } s = {{5}}; // expected-warning {{braces}}
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}
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// dr633: na
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// see also n2993
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namespace dr634 { // dr634: yes
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struct S { S(); S(const S&); virtual void f(); ~S(); };
|
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int f(...);
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char f(int);
|
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template<typename T> int (&g(T))[sizeof f(T())];
|
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int (&a)[sizeof(int)] = g(S());
|
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int (&b)[1] = g(0);
|
||
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int k = f(S()); // expected-error {{cannot pass}}
|
||
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}
|
||
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|
||
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namespace dr635 { // dr635: yes
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||
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template<typename T> struct A { A(); ~A(); };
|
||
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template<typename T> A<T>::A<T>() {} // expected-error {{cannot have template arguments}}
|
||
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template<typename T> A<T>::~A<T>() {}
|
||
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||
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template<typename T> struct B { B(); ~B(); };
|
||
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template<typename T> B<T>::B() {}
|
||
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template<typename T> B<T>::~B() {}
|
||
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|
||
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struct C { template<typename T> C(); C(); };
|
||
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template<typename T> C::C() {}
|
||
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C::C() {}
|
||
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template<> C::C<int>() {} // expected-error {{constructor name}} expected-error {{unqualified-id}}
|
||
|
|
/*FIXME: needed for error recovery:*/;
|
||
|
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|
||
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template<typename T> struct D { template<typename U> D(); D(); };
|
||
|
|
template<typename T> D<T>::D() {} // expected-note {{previous}}
|
||
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template<typename T> template<typename U> D<T>::D() {}
|
||
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template<typename T> D<T>::D<T>() {} // expected-error {{redefinition}} expected-error {{cannot have template arg}}
|
||
|
|
}
|
||
|
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|
||
|
|
namespace dr637 { // dr637: yes
|
||
|
|
void f(int i) {
|
||
|
|
i = ++i + 1;
|
||
|
|
i = i++ + 1;
|
||
|
|
#if __cplusplus < 201703L
|
||
|
|
// expected-warning@-2 {{unsequenced}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr638 { // dr638: no
|
||
|
|
template<typename T> struct A {
|
||
|
|
struct B;
|
||
|
|
void f();
|
||
|
|
void g();
|
||
|
|
struct C {
|
||
|
|
void h();
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
class X {
|
||
|
|
typedef int type;
|
||
|
|
template<class T> friend struct A<T>::B; // expected-warning {{not supported}}
|
||
|
|
template<class T> friend void A<T>::f(); // expected-warning {{not supported}}
|
||
|
|
template<class T> friend void A<T>::g(); // expected-warning {{not supported}}
|
||
|
|
template<class T> friend void A<T>::C::h(); // expected-warning {{not supported}}
|
||
|
|
};
|
||
|
|
|
||
|
|
template<> struct A<int> {
|
||
|
|
X::type a; // FIXME: private
|
||
|
|
struct B {
|
||
|
|
X::type b; // ok
|
||
|
|
};
|
||
|
|
int f() { X::type c; } // FIXME: private
|
||
|
|
void g() { X::type d; } // ok
|
||
|
|
struct D {
|
||
|
|
void h() { X::type e; } // FIXME: private
|
||
|
|
};
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr639 { // dr639: yes
|
||
|
|
void f(int i) {
|
||
|
|
void((i = 0) + (i = 0)); // expected-warning {{unsequenced}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr641 { // dr641: yes
|
||
|
|
namespace std_example {
|
||
|
|
struct abc;
|
||
|
|
|
||
|
|
struct xyz {
|
||
|
|
xyz(); // expected-note 0-1{{candidate}}
|
||
|
|
xyz(xyz &); // expected-note 0-1{{candidate}}
|
||
|
|
|
||
|
|
operator xyz &() = delete; // expected-error 0-1{{extension}} expected-warning {{will never be used}}
|
||
|
|
operator abc &() = delete; // expected-error 0-1{{extension}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct abc : xyz {};
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
void use(T &); // expected-note {{expects an lvalue}}
|
||
|
|
void test() {
|
||
|
|
use<xyz>(xyz()); // expected-error {{no match}}
|
||
|
|
use<const xyz>(xyz());
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error-re@-2 {{no viable constructor copying parameter of type '{{.*}}xyz'}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename T> struct error { typedef typename T::error type; };
|
||
|
|
|
||
|
|
struct A {
|
||
|
|
template<typename T, typename error<T>::type = 0> operator T() const; // expected-error 0-1{{extension}}
|
||
|
|
};
|
||
|
|
A a;
|
||
|
|
void f(A&); // expected-note 2{{candidate}}
|
||
|
|
void g(const A ca) {
|
||
|
|
f(A()); // expected-error {{no match}}
|
||
|
|
f(ca); // expected-error {{no match}}
|
||
|
|
(void)A();
|
||
|
|
(void)ca;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr642 { // dr642: yes
|
||
|
|
void f() {
|
||
|
|
const int i = 2;
|
||
|
|
{
|
||
|
|
char i[i];
|
||
|
|
_Static_assert(sizeof(i) == 2, ""); // expected-error {{C11}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct s { int a; };
|
||
|
|
void g(int s) {
|
||
|
|
struct s *p = new struct s;
|
||
|
|
p->a = s;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr643 { // dr643: yes
|
||
|
|
struct A {
|
||
|
|
int x;
|
||
|
|
auto f() -> decltype(this->x);
|
||
|
|
auto f(A &a) -> decltype(a.x);
|
||
|
|
auto g() -> decltype(x);
|
||
|
|
auto h() -> decltype(this->y); // expected-error {{no member named 'y'}}
|
||
|
|
auto h(A &a) -> decltype(a.y); // expected-error {{no member named 'y'}}
|
||
|
|
auto i() -> decltype(y); // expected-error {{undeclared identifier 'y'}}
|
||
|
|
int y;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr644 { // dr644: partial
|
||
|
|
struct A {
|
||
|
|
A() = default;
|
||
|
|
int x, y;
|
||
|
|
};
|
||
|
|
static_assert(__is_literal_type(A), "");
|
||
|
|
|
||
|
|
struct B : A {};
|
||
|
|
static_assert(__is_literal_type(B), "");
|
||
|
|
|
||
|
|
struct C : virtual A {};
|
||
|
|
static_assert(!__is_literal_type(C), "");
|
||
|
|
|
||
|
|
struct D { C c; };
|
||
|
|
static_assert(!__is_literal_type(D), "");
|
||
|
|
|
||
|
|
// FIXME: According to DR644, E<C> is a literal type despite having virtual
|
||
|
|
// base classes. This appears to be a wording defect.
|
||
|
|
template<typename T>
|
||
|
|
struct E : T {
|
||
|
|
constexpr E() = default;
|
||
|
|
};
|
||
|
|
static_assert(!__is_literal_type(E<C>), "");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// dr645 increases permission to optimize; it's not clear that it's possible to
|
||
|
|
// test for this.
|
||
|
|
// dr645: na
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr646 { // dr646: sup 981
|
||
|
|
struct A {
|
||
|
|
constexpr A(const A&) = default; // ok
|
||
|
|
};
|
||
|
|
|
||
|
|
struct B {
|
||
|
|
constexpr B() {}
|
||
|
|
B(B&);
|
||
|
|
};
|
||
|
|
constexpr B b = {}; // ok
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr647 { // dr647: yes
|
||
|
|
// This is partially superseded by dr1358.
|
||
|
|
struct A {
|
||
|
|
constexpr virtual void f() const;
|
||
|
|
constexpr virtual void g() const {}
|
||
|
|
#if __cplusplus <= 201703L
|
||
|
|
// expected-error@-2 {{virtual function cannot be constexpr}}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
struct X { virtual void f() const; };
|
||
|
|
#if __cplusplus <= 201703L
|
||
|
|
// expected-note@-2 {{overridden}}
|
||
|
|
#endif
|
||
|
|
struct B : X {
|
||
|
|
constexpr void f() const {}
|
||
|
|
#if __cplusplus <= 201703L
|
||
|
|
// expected-error@-2 {{virtual function cannot be constexpr}}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
struct NonLiteral { NonLiteral() {} }; // expected-note {{not an aggregate and has no constexpr constructors}}
|
||
|
|
|
||
|
|
struct C {
|
||
|
|
constexpr C(NonLiteral);
|
||
|
|
constexpr C(NonLiteral, int) {} // expected-error {{not a literal type}}
|
||
|
|
constexpr C() try {} catch (...) {}
|
||
|
|
#if __cplusplus <= 201703L
|
||
|
|
// expected-error@-2 {{function try block in constexpr constructor is a C++20 extension}}
|
||
|
|
#endif
|
||
|
|
#if __cplusplus < 201402L
|
||
|
|
// expected-error@-5 {{use of this statement in a constexpr constructor is a C++14 extension}}
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
struct D {
|
||
|
|
operator int() const;
|
||
|
|
constexpr D(int) {}
|
||
|
|
D(float); // expected-note 2{{declared here}}
|
||
|
|
};
|
||
|
|
constexpr int get();
|
||
|
|
struct E {
|
||
|
|
int n;
|
||
|
|
D d;
|
||
|
|
|
||
|
|
// FIXME: We should diagnose this, as the conversion function is not
|
||
|
|
// constexpr. However, that part of this issue is supreseded by dr1364 and
|
||
|
|
// others; no diagnostic is required for this any more.
|
||
|
|
constexpr E()
|
||
|
|
: n(D(0)),
|
||
|
|
d(0) {}
|
||
|
|
|
||
|
|
constexpr E(int) // expected-error {{never produces a constant expression}}
|
||
|
|
: n(0),
|
||
|
|
d(0.0f) {} // expected-note {{non-constexpr constructor}}
|
||
|
|
constexpr E(float f) // expected-error {{never produces a constant expression}}
|
||
|
|
: n(get()),
|
||
|
|
d(D(0) + f) {} // expected-note {{non-constexpr constructor}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr648 { // dr648: yes
|
||
|
|
int f();
|
||
|
|
constexpr int a = (true ? 1 : f());
|
||
|
|
constexpr int b = false && f();
|
||
|
|
constexpr int c = true || f();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr649 { // dr649: yes
|
||
|
|
alignas(0x40000000) int n; // expected-error {{requested alignment}}1
|
||
|
|
struct alignas(0x40000000) X {}; // expected-error {{requested alignment}}
|
||
|
|
struct Y { int n alignas(0x40000000); }; // expected-error {{requested alignment}}
|
||
|
|
struct alignas(256) Z {};
|
||
|
|
// This part is superseded by dr2130 and eventually by aligned allocation support.
|
||
|
|
auto *p = new Z;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// dr650 FIXME: add codegen test
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr651 { // dr651: yes
|
||
|
|
struct X {
|
||
|
|
virtual X &f();
|
||
|
|
};
|
||
|
|
struct Y : X {
|
||
|
|
Y &f();
|
||
|
|
};
|
||
|
|
using T = decltype(((X&&)Y()).f());
|
||
|
|
using T = X &;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr652 { // dr652: yes
|
||
|
|
constexpr int n = 1.2 * 3.4;
|
||
|
|
static_assert(n == 4, "");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// dr653 FIXME: add codegen test
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr654 { // dr654: sup 1423
|
||
|
|
void f() {
|
||
|
|
if (nullptr) {} // expected-warning {{implicit conversion of nullptr constant to 'bool'}}
|
||
|
|
bool b = nullptr; // expected-error {{cannot initialize a variable of type 'bool' with an rvalue of type 'nullptr_t'}}
|
||
|
|
if (nullptr == 0) {}
|
||
|
|
if (nullptr != 0) {}
|
||
|
|
if (nullptr <= 0) {} // expected-error {{invalid operands}}
|
||
|
|
if (nullptr == 1) {} // expected-error {{invalid operands}}
|
||
|
|
if (!nullptr) {} // expected-warning {{implicit conversion of nullptr constant to 'bool'}}
|
||
|
|
decltype(nullptr) n = 0;
|
||
|
|
static_cast<int>(nullptr); // expected-error {{not allowed}}
|
||
|
|
(void)static_cast<decltype(nullptr)>(0);
|
||
|
|
static_cast<decltype(nullptr)>(1); // expected-error {{not allowed}}
|
||
|
|
void(true ? nullptr : 0);
|
||
|
|
void(true ? 0 : nullptr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace dr655 { // dr655: yes
|
||
|
|
struct A { A(int); }; // expected-note 2-3{{not viable}}
|
||
|
|
struct B : A {
|
||
|
|
A a;
|
||
|
|
B();
|
||
|
|
B(int) : B() {} // expected-error 0-1 {{C++11}}
|
||
|
|
B(int*) : A() {} // expected-error {{no matching constructor}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr656 { // dr656: yes
|
||
|
|
struct A { A(const A&) = delete; }; // expected-error 0-1 {{C++11}}
|
||
|
|
struct B : A {};
|
||
|
|
struct X { operator B(); } x;
|
||
|
|
const A &r = x;
|
||
|
|
struct Y : private A { // expected-note 2{{here}} expected-note 2{{candidate}}
|
||
|
|
operator B() volatile;
|
||
|
|
};
|
||
|
|
extern Y y;
|
||
|
|
extern volatile Y vy;
|
||
|
|
// Conversion not considered due to reference-related types.
|
||
|
|
const A &s = y; // expected-error {{private base class}}
|
||
|
|
const A &t = vy; // expected-error {{drops 'volatile'}}
|
||
|
|
|
||
|
|
struct C { operator struct D(); } c;
|
||
|
|
struct D : C {};
|
||
|
|
const D &d = c; // ok, D not reference-related to C
|
||
|
|
|
||
|
|
template<typename T> void accept(T); // expected-note {{candidate}}
|
||
|
|
template<typename T> void accept(...) = delete; // expected-error 0-1 {{C++11}} expected-note {{candidate}}
|
||
|
|
void f() {
|
||
|
|
accept<const A&>(x);
|
||
|
|
accept<const A&>(y); // expected-error {{private base class}}
|
||
|
|
accept<const A&>(vy); // expected-error {{call to deleted}} expected-error {{no matching constructor}}
|
||
|
|
accept<const D&>(c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr657 { // dr657: partial
|
||
|
|
struct Abs { virtual void x() = 0; };
|
||
|
|
struct Der : public Abs { virtual void x(); };
|
||
|
|
|
||
|
|
struct Cnvt { template<typename F> Cnvt(F); };
|
||
|
|
|
||
|
|
void foo(Cnvt a);
|
||
|
|
void foo(Abs &a);
|
||
|
|
void f(Abs *a) { foo(*a); }
|
||
|
|
|
||
|
|
void bar(Abs &a);
|
||
|
|
template<typename T> void bar(T);
|
||
|
|
void g(Abs *a) { bar(*a); }
|
||
|
|
|
||
|
|
// FIXME: The following examples demonstrate that we might be accepting the
|
||
|
|
// above cases for the wrong reason.
|
||
|
|
|
||
|
|
// FIXME: We should reject this.
|
||
|
|
struct C { C(Abs) {} };
|
||
|
|
// FIXME: We should reject this.
|
||
|
|
struct Q { operator Abs() { __builtin_unreachable(); } } q;
|
||
|
|
#if __cplusplus >= 201703L
|
||
|
|
// FIXME: We should *definitely* reject this.
|
||
|
|
C c = Q().operator Abs();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
template<typename F> struct Cnvt2 { Cnvt2(F); typedef int type; };
|
||
|
|
|
||
|
|
// FIXME: We should reject this.
|
||
|
|
void baz(Abs &a);
|
||
|
|
template<typename T> typename Cnvt2<T>::type baz(T);
|
||
|
|
void h(Abs *a) { baz(*a); }
|
||
|
|
|
||
|
|
// FIXME: We should reject this too.
|
||
|
|
Cnvt2<Abs>::type err;
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr658 FIXME: add codegen test
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr659 { // dr659: yes
|
||
|
|
static_assert(alignof(char) == alignof(char&), "");
|
||
|
|
static_assert(alignof(int) == alignof(int&), "");
|
||
|
|
int n = alignof(int(&)()); // expected-error {{application of 'alignof' to a function type}}
|
||
|
|
struct A; // expected-note {{forward}}
|
||
|
|
int m = alignof(A&); // expected-error {{application of 'alignof' to an incomplete type}}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr660 { // dr660: yes
|
||
|
|
enum : int { a };
|
||
|
|
enum class { b }; // expected-error {{requires a name}}
|
||
|
|
auto x = a;
|
||
|
|
|
||
|
|
struct X {
|
||
|
|
enum : int { a };
|
||
|
|
enum class { b }; // expected-error {{requires a name}}
|
||
|
|
};
|
||
|
|
auto y = X::a;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// dr661 FIXME: add codegen test
|
||
|
|
|
||
|
|
namespace dr662 { // dr662: yes
|
||
|
|
template <typename T> void f(T t) {
|
||
|
|
T &tr = t;
|
||
|
|
T *tp = &t; // expected-error {{pointer to a reference}}
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
auto *ap = &t;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
void g(int n) { f<int&>(n); } // expected-note {{instantiation of}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr663 { // dr663: yes c++11
|
||
|
|
int ЍЎ = 123;
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error@-2 {{non-ASCII}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr664 { // dr664: yes
|
||
|
|
struct A { A(const A&) = delete; };
|
||
|
|
A &&f(A &&a, int n) {
|
||
|
|
if (n)
|
||
|
|
return f(static_cast<A&&>(a), n - 1);
|
||
|
|
return static_cast<A&&>(a);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace dr665 { // dr665: yes
|
||
|
|
struct A { virtual ~A(); };
|
||
|
|
struct B : A {} *b;
|
||
|
|
struct C : private A {} *c; // expected-note {{here}}
|
||
|
|
struct D : B, C {} *d;
|
||
|
|
|
||
|
|
struct VB : virtual A {} *vb;
|
||
|
|
struct VC : private virtual A {} *vc; // expected-note {{here}}
|
||
|
|
struct VD : VB, VC {} *vd;
|
||
|
|
|
||
|
|
void f() {
|
||
|
|
(void)dynamic_cast<A*>(b);
|
||
|
|
(void)dynamic_cast<A*>(c); // expected-error {{private}}
|
||
|
|
(void)dynamic_cast<A*>(d); // expected-error {{ambiguous}}
|
||
|
|
(void)dynamic_cast<A*>(vb);
|
||
|
|
(void)dynamic_cast<A*>(vc); // expected-error {{private}}, even though it could be valid at runtime
|
||
|
|
(void)dynamic_cast<A*>(vd);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr666 { // dr666: yes
|
||
|
|
struct P { friend P operator*(P, P); P(int); } p(0);
|
||
|
|
|
||
|
|
template<int> int f();
|
||
|
|
template<typename T> int f() {
|
||
|
|
T::type *p = 0; // expected-error {{missing 'typename'}}
|
||
|
|
int a(T::type); // expected-error {{missing 'typename'}}
|
||
|
|
return f<T::type>(); // expected-error {{missing 'typename'}}
|
||
|
|
}
|
||
|
|
struct X { static const int type = 0; };
|
||
|
|
struct Y { typedef int type; };
|
||
|
|
int a = f<X>();
|
||
|
|
int b = f<Y>(); // expected-note {{instantiation of}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Triviality is entirely different in C++98.
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr667 { // dr667: yes
|
||
|
|
struct A {
|
||
|
|
A() = default; // expected-warning {{explicitly defaulted default constructor is implicitly deleted}}
|
||
|
|
int &r; // expected-note {{because field 'r' of reference type 'int &' would not be initialized}}
|
||
|
|
};
|
||
|
|
static_assert(!__is_trivially_constructible(A), "");
|
||
|
|
|
||
|
|
struct B { ~B() = delete; };
|
||
|
|
union C { B b; };
|
||
|
|
static_assert(!__is_trivially_destructible(C), "");
|
||
|
|
|
||
|
|
struct D { D(const D&) = delete; };
|
||
|
|
struct E : D {};
|
||
|
|
static_assert(!__is_trivially_constructible(E, const E&), "");
|
||
|
|
|
||
|
|
struct F { F &operator=(F&&) = delete; };
|
||
|
|
struct G : F {};
|
||
|
|
static_assert(!__is_trivially_assignable(G, G&&), "");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// dr668 FIXME: add codegen test
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr669 { // dr669: yes
|
||
|
|
void f() {
|
||
|
|
int n;
|
||
|
|
using T = decltype(n);
|
||
|
|
using T = int;
|
||
|
|
using U = decltype((n));
|
||
|
|
using U = int &;
|
||
|
|
|
||
|
|
[=] {
|
||
|
|
using V = decltype(n);
|
||
|
|
using V = int;
|
||
|
|
using W = decltype((n));
|
||
|
|
using W = const int&;
|
||
|
|
} ();
|
||
|
|
|
||
|
|
struct X {
|
||
|
|
int n;
|
||
|
|
void f() const {
|
||
|
|
using X = decltype(n);
|
||
|
|
using X = int;
|
||
|
|
using Y = decltype((n));
|
||
|
|
using Y = const int&;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace dr671 { // dr671: yes
|
||
|
|
enum class E { e }; // expected-error 0-1 {{C++11}}
|
||
|
|
E e = static_cast<E>(0);
|
||
|
|
int n = static_cast<int>(E::e); // expected-error 0-1 {{C++11}}
|
||
|
|
int m = static_cast<int>(e); // expected-error 0-1 {{C++11}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr672 FIXME: add codegen test
|
||
|
|
|
||
|
|
namespace dr673 { // dr673: yes
|
||
|
|
template<typename> struct X { static const int n = 0; };
|
||
|
|
|
||
|
|
class A {
|
||
|
|
friend class B *f();
|
||
|
|
class C *f();
|
||
|
|
void f(class D *);
|
||
|
|
enum { e = X<struct E>::n };
|
||
|
|
void g() { extern struct F *p; }
|
||
|
|
};
|
||
|
|
B *b;
|
||
|
|
C *c;
|
||
|
|
D *d;
|
||
|
|
E *e;
|
||
|
|
F *f; // expected-error {{unknown type name}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr674 { // dr674: 8
|
||
|
|
template<typename T> int f(T);
|
||
|
|
|
||
|
|
int g(int);
|
||
|
|
template<typename T> int g(T);
|
||
|
|
|
||
|
|
int h(int);
|
||
|
|
template<typename T> int h(T);
|
||
|
|
|
||
|
|
class X {
|
||
|
|
friend int dr674::f(int);
|
||
|
|
friend int dr674::g(int);
|
||
|
|
friend int dr674::h<>(int);
|
||
|
|
int n; // expected-note 2{{private}}
|
||
|
|
};
|
||
|
|
|
||
|
|
template<typename T> int f(T) { return X().n; }
|
||
|
|
int g(int) { return X().n; }
|
||
|
|
template<typename T> int g(T) { return X().n; } // expected-error {{private}}
|
||
|
|
int h(int) { return X().n; } // expected-error {{private}}
|
||
|
|
template<typename T> int h(T) { return X().n; }
|
||
|
|
|
||
|
|
template int f(int);
|
||
|
|
template int g(int); // expected-note {{in instantiation of}}
|
||
|
|
template int h(int);
|
||
|
|
|
||
|
|
|
||
|
|
struct Y {
|
||
|
|
template<typename T> int f(T);
|
||
|
|
|
||
|
|
int g(int);
|
||
|
|
template<typename T> int g(T);
|
||
|
|
|
||
|
|
int h(int);
|
||
|
|
template<typename T> int h(T);
|
||
|
|
};
|
||
|
|
|
||
|
|
class Z {
|
||
|
|
friend int Y::f(int);
|
||
|
|
friend int Y::g(int);
|
||
|
|
friend int Y::h<>(int);
|
||
|
|
int n; // expected-note 2{{private}}
|
||
|
|
};
|
||
|
|
|
||
|
|
template<typename T> int Y::f(T) { return Z().n; }
|
||
|
|
int Y::g(int) { return Z().n; }
|
||
|
|
template<typename T> int Y::g(T) { return Z().n; } // expected-error {{private}}
|
||
|
|
int Y::h(int) { return Z().n; } // expected-error {{private}}
|
||
|
|
template<typename T> int Y::h(T) { return Z().n; }
|
||
|
|
|
||
|
|
// FIXME: Should the <> be required here?
|
||
|
|
template int Y::f<>(int);
|
||
|
|
template int Y::g<>(int); // expected-note {{in instantiation of}}
|
||
|
|
template int Y::h<>(int);
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr675 { // dr675: dup 739
|
||
|
|
template<typename T> struct A { T n : 1; };
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
static_assert(A<char>{1}.n < 0, "");
|
||
|
|
static_assert(A<int>{1}.n < 0, "");
|
||
|
|
static_assert(A<long long>{1}.n < 0, "");
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr676: na
|
||
|
|
|
||
|
|
namespace dr677 { // dr677: no
|
||
|
|
struct A {
|
||
|
|
void *operator new(std::size_t);
|
||
|
|
void operator delete(void*) = delete; // expected-error 0-1{{C++11}} expected-note {{deleted}}
|
||
|
|
};
|
||
|
|
struct B {
|
||
|
|
void *operator new(std::size_t);
|
||
|
|
void operator delete(void*) = delete; // expected-error 0-1{{C++11}} expected-note 2{{deleted}}
|
||
|
|
virtual ~B();
|
||
|
|
};
|
||
|
|
void f(A *p) { delete p; } // expected-error {{deleted}}
|
||
|
|
// FIXME: This appears to be valid; we shouldn't even be looking up the 'operator delete' here.
|
||
|
|
void f(B *p) { delete p; } // expected-error {{deleted}}
|
||
|
|
B::~B() {} // expected-error {{deleted}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr678 FIXME: check that the modules ODR check catches this
|
||
|
|
|
||
|
|
namespace dr679 { // dr679: yes
|
||
|
|
struct X {};
|
||
|
|
template<int> void operator+(X, X);
|
||
|
|
template<> void operator+<0>(X, X) {} // expected-note {{previous}}
|
||
|
|
template<> void operator+<0>(X, X) {} // expected-error {{redefinition}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr680: na
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr681 { // dr681: partial
|
||
|
|
auto *a() -> int; // expected-error {{must specify return type 'auto', not 'auto *'}}
|
||
|
|
auto (*b)() -> int;
|
||
|
|
// FIXME: The errors here aren't great.
|
||
|
|
auto (*c()) -> int; // expected-error {{expected function body}}
|
||
|
|
auto ((*d)()) -> int; // expected-error {{expected ';'}} expected-error {{requires an initializer}}
|
||
|
|
|
||
|
|
// FIXME: This is definitely wrong. This should be
|
||
|
|
// "function of () returning pointer to function of () returning int"
|
||
|
|
// not a function with a deduced return type.
|
||
|
|
auto (*e())() -> int; // expected-error 0-1{{C++14}}
|
||
|
|
|
||
|
|
auto f() -> int (*)();
|
||
|
|
auto g() -> auto (*)() -> int;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr683 { // dr683: yes
|
||
|
|
struct A {
|
||
|
|
A() = default;
|
||
|
|
A(const A&) = default;
|
||
|
|
A(A&);
|
||
|
|
};
|
||
|
|
static_assert(__is_trivially_constructible(A, const A&), "");
|
||
|
|
static_assert(!__is_trivially_constructible(A, A&), "");
|
||
|
|
static_assert(!__is_trivial(A), "");
|
||
|
|
|
||
|
|
struct B : A {};
|
||
|
|
static_assert(__is_trivially_constructible(B, const B&), "");
|
||
|
|
static_assert(__is_trivially_constructible(B, B&), "");
|
||
|
|
static_assert(__is_trivial(B), "");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
namespace dr684 { // dr684: sup 1454
|
||
|
|
void f() {
|
||
|
|
int a; // expected-note {{here}}
|
||
|
|
constexpr int *p = &a; // expected-error {{constant expression}} expected-note {{pointer to 'a'}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace dr685 { // dr685: yes
|
||
|
|
enum E : long { e };
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error@-2 {{enumeration types with a fixed underlying type are a C++11 extension}}
|
||
|
|
#endif
|
||
|
|
void f(int);
|
||
|
|
int f(long);
|
||
|
|
int a = f(e);
|
||
|
|
|
||
|
|
enum G : short { g };
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error@-2 {{enumeration types with a fixed underlying type are a C++11 extension}}
|
||
|
|
#endif
|
||
|
|
int h(short);
|
||
|
|
void h(long);
|
||
|
|
int b = h(g);
|
||
|
|
|
||
|
|
int i(int);
|
||
|
|
void i(long);
|
||
|
|
int c = i(g);
|
||
|
|
|
||
|
|
int j(unsigned int); // expected-note {{candidate}}
|
||
|
|
void j(long); // expected-note {{candidate}}
|
||
|
|
int d = j(g); // expected-error {{ambiguous}}
|
||
|
|
|
||
|
|
// Valid per dr1601
|
||
|
|
int k(short);
|
||
|
|
void k(int);
|
||
|
|
int x = k(g);
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr686 { // dr686: yes
|
||
|
|
void f() {
|
||
|
|
(void)dynamic_cast<struct A*>(0); // expected-error {{incomplete}} expected-note {{forward}}
|
||
|
|
(void)dynamic_cast<struct A{}*>(0); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)typeid(struct B*);
|
||
|
|
(void)typeid(struct B{}*); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)static_cast<struct C*>(0);
|
||
|
|
(void)static_cast<struct C{}*>(0); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)reinterpret_cast<struct D*>(0);
|
||
|
|
(void)reinterpret_cast<struct D{}*>(0); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)const_cast<struct E*>(0); // expected-error {{not allowed}}
|
||
|
|
(void)const_cast<struct E{}*>(0); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)sizeof(struct F*);
|
||
|
|
(void)sizeof(struct F{}*); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
(void)new struct G*;
|
||
|
|
(void)new struct G{}*; // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
(void)alignof(struct H*);
|
||
|
|
(void)alignof(struct H{}*); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
#endif
|
||
|
|
(void)(struct I*)0;
|
||
|
|
(void)(struct I{}*)0; // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
if (struct J *p = 0) {}
|
||
|
|
if (struct J {} *p = 0) {} // expected-error {{cannot be defined in a condition}}
|
||
|
|
for (struct K *p = 0; struct L *q = 0; ) {}
|
||
|
|
for (struct K {} *p = 0; struct L {} *q = 0; ) {} // expected-error {{'L' cannot be defined in a condition}}
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
using M = struct {};
|
||
|
|
#endif
|
||
|
|
struct N {
|
||
|
|
operator struct O{}(){}; // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
};
|
||
|
|
try {}
|
||
|
|
catch (struct P *) {} // expected-error {{incomplete}} expected-note {{forward}}
|
||
|
|
catch (struct P {} *) {} // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
#if __cplusplus < 201703L
|
||
|
|
void g() throw(struct Q); // expected-error {{incomplete}} expected-note {{forward}}
|
||
|
|
void h() throw(struct Q {}); // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
template<struct R *> struct X;
|
||
|
|
template<struct R {} *> struct Y; // expected-error {{cannot be defined in a type specifier}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr687 { // dr687 (9 c++20, but the issue is still considered open)
|
||
|
|
template<typename T> void f(T a) {
|
||
|
|
// This is valid in C++20.
|
||
|
|
g<int>(a);
|
||
|
|
#if __cplusplus <= 201703L
|
||
|
|
// expected-error@-2 {{C++20 extension}}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// This is not.
|
||
|
|
template g<int>(a); // expected-error {{expected expression}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr692 { // dr692: no
|
||
|
|
namespace temp_func_order_example2 {
|
||
|
|
template <typename T, typename U> struct A {};
|
||
|
|
template <typename T, typename U> void f(U, A<U, T> *p = 0); // expected-note {{candidate}}
|
||
|
|
template <typename U> int &f(U, A<U, U> *p = 0); // expected-note {{candidate}}
|
||
|
|
template <typename T> void g(T, T = T());
|
||
|
|
template <typename T, typename... U> void g(T, U...); // expected-error 0-1{{C++11}}
|
||
|
|
void h() {
|
||
|
|
int &r = f<int>(42, (A<int, int> *)0);
|
||
|
|
f<int>(42); // expected-error {{ambiguous}}
|
||
|
|
// FIXME: We should reject this due to ambiguity between the pack and the
|
||
|
|
// default argument. Only parameters with arguments are considered during
|
||
|
|
// partial ordering of function templates.
|
||
|
|
g(42);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace temp_func_order_example3 {
|
||
|
|
template <typename T, typename... U> void f(T, U...); // expected-error 0-1{{C++11}}
|
||
|
|
template <typename T> void f(T);
|
||
|
|
template <typename T, typename... U> int &g(T *, U...); // expected-error 0-1{{C++11}}
|
||
|
|
template <typename T> void g(T);
|
||
|
|
void h(int i) {
|
||
|
|
// This is made ambiguous by dr692, but made valid again by dr1395.
|
||
|
|
f(&i);
|
||
|
|
int &r = g(&i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace temp_deduct_partial_example {
|
||
|
|
template <typename... Args> char &f(Args... args); // expected-error 0-1{{C++11}}
|
||
|
|
template <typename T1, typename... Args> short &f(T1 a1, Args... args); // expected-error 0-1{{C++11}}
|
||
|
|
template <typename T1, typename T2> int &f(T1 a1, T2 a2);
|
||
|
|
void g() {
|
||
|
|
char &a = f();
|
||
|
|
short &b = f(1, 2, 3);
|
||
|
|
int &c = f(1, 2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace temp_deduct_type_example1 {
|
||
|
|
template <class T1, class ...Z> class S; // expected-error 0-1{{C++11}}
|
||
|
|
template <class T1, class ...Z> class S<T1, const Z&...>; // expected-error 0-1{{C++11}}
|
||
|
|
template <class T1, class T2> class S<T1, const T2&> {};
|
||
|
|
S<int, const int&> s;
|
||
|
|
|
||
|
|
// FIXME: This should select the first partial specialization. Deduction of
|
||
|
|
// the second from the first should succeed, because we should ignore the
|
||
|
|
// trailing pack in A with no corresponding P.
|
||
|
|
template<class T, class... U> struct A; // expected-error 0-1{{C++11}}
|
||
|
|
template<class T1, class T2, class... U> struct A<T1,T2*,U...>; // expected-note {{matches}} expected-error 0-1{{C++11}}
|
||
|
|
template<class T1, class T2> struct A<T1,T2> {}; // expected-note {{matches}}
|
||
|
|
template struct A<int, int*>; // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace temp_deduct_type_example3 {
|
||
|
|
// FIXME: This should select the first template, as in the case above.
|
||
|
|
template<class T, class... U> void f(T*, U...){} // expected-note {{candidate}} expected-error 0-1{{C++11}}
|
||
|
|
template<class T> void f(T){} // expected-note {{candidate}}
|
||
|
|
template void f(int*); // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr696 { // dr696: yes
|
||
|
|
void f(const int*);
|
||
|
|
void g() {
|
||
|
|
const int N = 10; // expected-note 1+{{here}}
|
||
|
|
struct A {
|
||
|
|
void h() {
|
||
|
|
int arr[N]; (void)arr;
|
||
|
|
f(&N); // expected-error {{declared in enclosing}}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
(void) [] { int arr[N]; (void)arr; };
|
||
|
|
(void) [] { f(&N); }; // expected-error {{cannot be implicitly captured}} expected-note {{here}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|