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// RUN: %clang_cc1 -std=c++11 -verify %s -pedantic
// RUN: %clang_cc1 -std=c++11 -verify %s -pedantic -fexperimental-new-constant-interpreter
// RUN: %clang_cc1 -std=c++20 -verify %s -pedantic
// RUN: %clang_cc1 -std=c++20 -verify %s -pedantic -fexperimental-new-constant-interpreter
namespace PR31692 {
struct A {
struct X { int n = 0; } x;
// Trigger construction of X() from a SFINAE context. This must not mark
// any part of X as invalid.
static_assert(!__is_constructible(X), "");
// Check that X::n is not marked invalid.
double &r = x.n; // expected-error {{non-const lvalue reference to type 'double' cannot bind to a value of unrelated type 'int'}}
};
// A::X can now be default-constructed.
static_assert(__is_constructible(A::X), "");
}
struct S {
} constexpr s;
struct C {
C(S);
};
class MemInit {
C m = s;
};
namespace std {
typedef decltype(sizeof(int)) size_t;
// libc++'s implementation
template <class _E> class initializer_list {
const _E *__begin_;
size_t __size_;
initializer_list(const _E *__b, size_t __s) : __begin_(__b), __size_(__s) {}
public:
typedef _E value_type;
typedef const _E &reference;
typedef const _E &const_reference;
typedef size_t size_type;
typedef const _E *iterator;
typedef const _E *const_iterator;
initializer_list() : __begin_(nullptr), __size_(0) {}
size_t size() const { return __size_; }
const _E *begin() const { return __begin_; }
const _E *end() const { return __begin_ + __size_; }
};
} // namespace std
#if __cplusplus >= 201703L
// Test CXXDefaultInitExpr rebuild issue in
// https://github.com/llvm/llvm-project/pull/87933
namespace test_rebuild {
template <typename T, int> class C {
public:
C(std::initializer_list<T>);
};
template <typename T> using Ptr = __remove_pointer(T) *;
template <typename T> C(T) -> C<Ptr<T>, sizeof(T)>;
class A {
public:
template <typename T1, typename T2> T1 *some_func(T2 &&);
};
struct B : A {
int *ar = some_func<int>(C{some_func<int>(0)});
B() {}
};
int TestBody_got;
template <int> class Vector {
public:
Vector(std::initializer_list<int>);
};
template <typename... Ts> Vector(Ts...) -> Vector<sizeof...(Ts)>;
class ProgramBuilder {
public:
template <typename T, typename ARGS> int *create(ARGS);
};
struct TypeTest : ProgramBuilder {
int *str_f16 = create<int>(Vector{0});
TypeTest() {}
};
class TypeTest_Element_Test : TypeTest {
void TestBody();
};
void TypeTest_Element_Test::TestBody() {
int *expect = str_f16;
&TestBody_got != expect; // expected-warning {{inequality comparison result unused}}
}
} // namespace test_rebuild
// Test CXXDefaultInitExpr rebuild issue in
// https://github.com/llvm/llvm-project/pull/92527
namespace test_rebuild2 {
struct F {
int g;
};
struct H {};
struct I {
I(const F &);
I(H);
};
struct L {
I i = I({.g = 0});
};
struct N : L {};
void f() {
delete new L; // Ok
delete new N; // Ok
}
} // namespace test_rebuild2
#endif // __cplusplus >= 201703L
#if __cplusplus >= 202002L
// This test ensures cleanup expressions are correctly produced
// in the presence of default member initializers.
namespace PR136554 {
struct string {
constexpr string(const char*) {};
constexpr ~string();
};
struct S;
struct optional {
template <typename U = S>
constexpr optional(U &&) {}
};
struct S {
string a;
optional b;
int defaulted = 0;
} test {
"", {
{ "", 0 }
}
};
// Ensure that the this pointer is
// transformed without crashing
consteval int immediate() { return 0;}
struct StructWithThisInInitializer {
int member() const {
return 0;
}
int m = member() + immediate();
int m2 = this->member() + immediate();
};
template <typename T>
struct StructWithThisInInitializerTPL {
template <typename U>
int member() const {
return 0;
}
int m = member<int>() + immediate();
int m2 = this->member<int>() + immediate();
};
void test_this() {
(void)StructWithThisInInitializer{};
(void)StructWithThisInInitializerTPL<int>{};
}
struct ReferenceToNestedMembers {
int m;
int a = ((void)immediate(), m); // ensure g is found in the correct scope
int b = ((void)immediate(), this->m); // ensure g is found in the correct scope
};
struct ReferenceToNestedMembersTest {
void* m = nullptr;
ReferenceToNestedMembers j{0};
} test_reference_to_nested_members;
}
namespace odr_in_unevaluated_context {
template <typename e, bool = __is_constructible(e)> struct f {
using type = bool;
};
template <class k, f<k>::type = false> int l;
int m;
struct p {
// This used to crash because m is first marked odr used
// during parsing, but subsequently used in an unevaluated context
// without being transformed.
int o = m;
p() {}
};
int i = l<p>;
}
#endif
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