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Diffstat (limited to 'test/SemaCXX/anonymous-union.cpp')
-rw-r--r-- | test/SemaCXX/anonymous-union.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/test/SemaCXX/anonymous-union.cpp b/test/SemaCXX/anonymous-union.cpp new file mode 100644 index 0000000..f77fa03 --- /dev/null +++ b/test/SemaCXX/anonymous-union.cpp @@ -0,0 +1,113 @@ +// 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}} |