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// RUN: clang-cc -fsyntax-only -verify %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 {
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-error{{declaration does not declare anything}}
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