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