81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
|
// 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);
|
||
|
|
}
|