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// RUN: %clang_cc1 -std=c++98 %s -Wno-unused -verify
// RUN: %clang_cc1 -std=c++11 %s -Wno-unused -verify
// RUN: %clang_cc1 -std=c++2a %s -Wno-unused -verify
void use(int);
void f() {
const int a = 1; // expected-note {{here}}
#if __cplusplus >= 201103L
constexpr int arr[3] = {1, 2, 3}; // expected-note 2{{here}}
struct S { int x; int f() const; };
constexpr S s = {0}; // expected-note 3{{here}}
constexpr S *ps = nullptr;
S *const &psr = ps; // expected-note 2{{here}}
#endif
struct Inner {
void test(int i) {
// id-expression
use(a);
#if __cplusplus >= 201103L
// subscripting operation with an array operand
use(arr[i]);
use(i[arr]);
use((+arr)[i]); // expected-error {{reference to local variable}}
use(i[+arr]); // expected-error {{reference to local variable}}
// class member access naming non-static data member
use(s.x);
use(s.f()); // expected-error {{reference to local variable}}
use((&s)->x); // expected-error {{reference to local variable}}
use(ps->x); // ok (lvalue-to-rvalue conversion applied to id-expression)
use(psr->x); // expected-error {{reference to local variable}}
// class member access naming a static data member
// FIXME: How to test this?
// pointer-to-member expression
use(s.*&S::x);
use((s.*&S::f)()); // expected-error {{reference to local variable}}
use(ps->*&S::x); // ok (lvalue-to-rvalue conversion applied to id-expression)
use(psr->*&S::x); // expected-error {{reference to local variable}}
#endif
// parentheses
use((a));
#if __cplusplus >= 201103L
use((s.x));
#endif
// glvalue conditional expression
use(i ? a : a);
use(i ? i : a);
// comma expression
use((i, a));
// FIXME: This is not an odr-use because it is a discarded-value
// expression applied to an expression whose potential result is 'a'.
use((a, a)); // expected-error {{reference to local variable}}
// (and combinations thereof)
use(a ? (i, a) : a);
#if __cplusplus >= 201103L
use(a ? (i, a) : arr[a ? s.x : arr[a]]);
#endif
}
};
}
// FIXME: Test that this behaves properly.
namespace std_example {
struct S { static const int x = 0, y = 0; };
const int &f(const int &r);
bool b;
int n = b ? (1, S::x)
: f(S::y);
}
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