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// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
struct X {
union {
float f3;
double d2;
} named;
union {
int i;
float f;
union {
float f2;
mutable double d;
};
};
void test_unqual_references();
struct { // expected-warning{{anonymous structs are a GNU extension}}
int a;
float b;
};
void test_unqual_references_const() const;
mutable union { // expected-error{{anonymous union at class scope must not have a storage specifier}}
float c1;
double c2;
};
};
void X::test_unqual_references() {
i = 0;
f = 0.0;
f2 = f;
d = f;
f3 = 0; // expected-error{{use of undeclared identifier 'f3'}}
a = 0;
}
void X::test_unqual_references_const() const {
d = 0.0;
f2 = 0; // expected-error{{read-only variable is not assignable}}
a = 0; // expected-error{{read-only variable is not assignable}}
}
void test_unqual_references(X x, const X xc) {
x.i = 0;
x.f = 0.0;
x.f2 = x.f;
x.d = x.f;
x.f3 = 0; // expected-error{{no member named 'f3'}}
x.a = 0;
xc.d = 0.0;
xc.f = 0; // expected-error{{read-only variable is not assignable}}
xc.a = 0; // expected-error{{read-only variable is not assignable}}
}
struct Redecl {
int x; // expected-note{{previous declaration is here}}
class y { };
union {
int x; // expected-error{{member of anonymous union redeclares 'x'}}
float y;
double z; // expected-note{{previous declaration is here}}
double zz; // expected-note{{previous definition is here}}
};
int z; // expected-error{{duplicate member 'z'}}
void zz(); // expected-error{{redefinition of 'zz' as different kind of symbol}}
};
union { // expected-error{{anonymous unions at namespace or global scope must be declared 'static'}}
int int_val;
float float_val;
};
static union {
int int_val2;
float float_val2;
};
void f() {
int_val2 = 0;
float_val2 = 0.0;
}
void g() {
union {
int i;
float f2;
};
i = 0;
f2 = 0.0;
}
struct BadMembers {
union {
struct X { }; // expected-error {{types cannot be declared in an anonymous union}}
struct { int x; int y; } y;
void f(); // expected-error{{functions cannot be declared in an anonymous union}}
private: int x1; // expected-error{{anonymous union cannot contain a private data member}}
protected: float x2; // expected-error{{anonymous union cannot contain a protected data member}}
};
};
// <rdar://problem/6481130>
typedef union { }; // expected-warning{{declaration does not declare anything}}
// <rdar://problem/7562438>
typedef struct objc_module *Foo ;
typedef struct _s {
union {
int a;
int Foo;
};
} s, *ps;
// <rdar://problem/7987650>
namespace test4 {
class A {
struct { // expected-warning{{anonymous structs are a GNU extension}}
int s0; // expected-note {{declared private here}}
double s1; // expected-note {{declared private here}}
union {
int su0; // expected-note {{declared private here}}
double su1; // expected-note {{declared private here}}
};
};
union {
int u0; // expected-note {{declared private here}}
double u1; // expected-note {{declared private here}}
struct { // expected-warning{{anonymous structs are a GNU extension}}
int us0; // expected-note {{declared private here}}
double us1; // expected-note {{declared private here}}
};
};
};
void test() {
A a;
(void) a.s0; // expected-error {{private member}}
(void) a.s1; // expected-error {{private member}}
(void) a.su0; // expected-error {{private member}}
(void) a.su1; // expected-error {{private member}}
(void) a.u0; // expected-error {{private member}}
(void) a.u1; // expected-error {{private member}}
(void) a.us0; // expected-error {{private member}}
(void) a.us1; // expected-error {{private member}}
}
}
typedef void *voidPtr;
void f2() {
union { int **ctxPtr; void **voidPtr; };
}
void foo_PR6741() {
union {
char *m_a;
int *m_b;
};
if(1) {
union {
char *m_a;
int *m_b;
};
}
}
namespace PR8326 {
template <class T>
class Foo {
public:
Foo()
: x(0)
, y(1){
}
private:
const union { // expected-warning{{anonymous union cannot be 'const'}}
struct { // expected-warning{{anonymous structs are a GNU extension}}
T x;
T y;
};
T v[2];
};
};
Foo<int> baz;
}
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