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author | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
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committer | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
commit | be1de4be954c80875ad4108e0a33e8e131b2f2c0 (patch) | |
tree | 1fbbecf276bf7c7bdcbb4dd446099d6d90eaa516 /clang/test/CXX/class/class.union/p2-0x.cpp | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
Diffstat (limited to 'clang/test/CXX/class/class.union/p2-0x.cpp')
-rw-r--r-- | clang/test/CXX/class/class.union/p2-0x.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/clang/test/CXX/class/class.union/p2-0x.cpp b/clang/test/CXX/class/class.union/p2-0x.cpp new file mode 100644 index 0000000..b5c4109 --- /dev/null +++ b/clang/test/CXX/class/class.union/p2-0x.cpp @@ -0,0 +1,48 @@ +// RUN: %clang_cc1 -verify -std=c++11 %s + +// Unlike in C++98, C++11 allows unions to have static data members. + +union U1 { + static constexpr int k1 = 0; + static const int k2 = k1; + static int k3 = k2; // expected-error {{non-const static data member must be initialized out of line}} + static constexpr double k4 = k2; + static const double k5 = k4; // expected-warning {{GNU extension}} expected-note {{use 'constexpr'}} + int n[k1 + 3]; +}; + +constexpr int U1::k1; +constexpr int U1::k2; +int U1::k3; + +const double U1::k4; +const double U1::k5; + +template<typename T> +union U2 { + static const int k1; + static double k2; + T t; +}; +template<typename T> constexpr int U2<T>::k1 = sizeof(U2<T>); +template<typename T> double U2<T>::k2 = 5.3; + +static_assert(U2<int>::k1 == sizeof(int), ""); +static_assert(U2<char>::k1 == sizeof(char), ""); + +union U3 { + static const int k; + U3() : k(0) {} // expected-error {{does not name a non-static data member}} +}; + +struct S { + union { + static const int n; // expected-error {{static members cannot be declared in an anonymous union}} + int a; + int b; + }; +}; +static union { + static const int k; // expected-error {{static members cannot be declared in an anonymous union}} + int n; +}; |