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// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
const int global = 5; // expected-note{{variable 'global' declared const here}}
void test1() {
global = 2; // expected-error{{cannot assign to variable 'global' with const-qualified type 'const int'}}
}
void test2 () {
const int local = 5; // expected-note{{variable 'local' declared const here}}
local = 0; // expected-error{{cannot assign to variable 'local' with const-qualified type 'const int'}}
}
void test2 (const int parameter) { // expected-note{{variable 'parameter' declared const here}}
parameter = 2; // expected-error{{cannot assign to variable 'parameter' with const-qualified type 'const int'}}
}
class test3 {
int field;
const int const_field = 1; // expected-note 2{{non-static data member 'const_field' declared const here}}
static const int static_const_field = 1; // expected-note 2{{variable 'static_const_field' declared const here}}
void test() {
const_field = 4; // expected-error{{cannot assign to non-static data member 'const_field' with const-qualified type 'const int'}}
static_const_field = 4; // expected-error{{cannot assign to variable 'static_const_field' with const-qualified type 'const int'}}
}
void test_const() const { // expected-note 2{{member function 'test3::test_const' is declared const here}}
field = 4; // expected-error{{cannot assign to non-static data member within const member function 'test_const'}}
const_field = 4 ; // expected-error{{cannot assign to non-static data member 'const_field' with const-qualified type 'const int'}}
static_const_field = 4; // expected-error{{cannot assign to variable 'static_const_field' with const-qualified type 'const int'}}
}
};
const int &return_const_ref(); // expected-note{{function 'return_const_ref' which returns const-qualified type 'const int &' declared here}}
void test4() {
return_const_ref() = 10; // expected-error{{cannot assign to return value because function 'return_const_ref' returns a const value}}
}
struct S5 {
int field;
const int const_field = 4; // expected-note {{non-static data member 'const_field' declared const here}}
};
void test5() {
S5 s5;
s5.field = 5;
s5.const_field = 5; // expected-error{{cannot assign to non-static data member 'const_field' with const-qualified type 'const int'}}
}
struct U1 {
int a = 5;
};
struct U2 {
U1 u1;
};
struct U3 {
const U2 u2 = U2(); // expected-note{{non-static data member 'u2' declared const here}}
};
struct U4 {
U3 u3;
};
void test6() {
U4 u4;
u4.u3.u2.u1.a = 5; // expected-error{{cannot assign to non-static data member 'u2' with const-qualified type 'const U2'}}
}
struct A {
int z;
};
struct B {
A a;
};
struct C {
B b;
C();
};
const C &getc(); // expected-note{{function 'getc' which returns const-qualified type 'const C &' declared here}}
void test7() {
const C c; // expected-note{{variable 'c' declared const here}}
c.b.a.z = 5; // expected-error{{cannot assign to variable 'c' with const-qualified type 'const C'}}
getc().b.a.z = 5; // expected-error{{cannot assign to return value because function 'getc' returns a const value}}
}
struct D { const int n; }; // expected-note 2{{non-static data member 'n' declared const here}}
struct E { D *const d = 0; };
void test8() {
extern D *const d;
d->n = 0; // expected-error{{cannot assign to non-static data member 'n' with const-qualified type 'const int'}}
E e;
e.d->n = 0; // expected-error{{cannot assign to non-static data member 'n' with const-qualified type 'const int'}}
}
struct F { int n; };
struct G { const F *f; }; // expected-note{{non-static data member 'f' declared const here}}
void test10() {
const F *f; // expected-note{{variable 'f' declared const here}}
f->n = 0; // expected-error{{cannot assign to variable 'f' with const-qualified type 'const F *'}}
G g;
g.f->n = 0; // expected-error{{cannot assign to non-static data member 'f' with const-qualified type 'const F *'}}
}
void test11(
const int x, // expected-note{{variable 'x' declared const here}}
const int& y // expected-note{{variable 'y' declared const here}}
) {
x = 5; // expected-error{{cannot assign to variable 'x' with const-qualified type 'const int'}}
y = 5; // expected-error{{cannot assign to variable 'y' with const-qualified type 'const int &'}}
}
struct H {
const int a = 0; // expected-note{{non-static data member 'a' declared const here}}
const int &b = a; // expected-note{{non-static data member 'b' declared const here}}
};
void test12(H h) {
h.a = 1; // expected-error {{cannot assign to non-static data member 'a' with const-qualified type 'const int'}}
h.b = 2; // expected-error {{cannot assign to non-static data member 'b' with const-qualified type 'const int &'}}
}
void test() {
typedef const int &Func();
Func &bar();
bar()() = 0; // expected-error {{read-only variable is not assignable}}
}
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