Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 147 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/alias-template.cpp b/clang/test/SemaCXX/alias-template.cpp
new file mode 100644
index 0000000..484dd33
--- /dev/null
+++ b/clang/test/SemaCXX/alias-template.cpp
@@ -0,0 +1,147 @@
+// RUN: %clang_cc1 -verify -std=c++11 %s
+
+namespace RedeclAliasTypedef {
+  template<typename U> using T = int;
+  template<typename U> using T = int;
+  template<typename U> using T = T<U>;
+}
+
+namespace IllegalTypeIds {
+  template<typename U> using A = void(int n = 0); // expected-error {{default arguments can only be specified for parameters in a function declaration}}
+  template<typename U> using B = inline void(int n); // expected-error {{type name does not allow function specifier}}
+  template<typename U> using C = virtual void(int n); // expected-error {{type name does not allow function specifier}}
+  template<typename U> using D = explicit void(int n); // expected-error {{type name does not allow function specifier}}
+  template<typename U> using E = void(int n) throw(); // expected-error {{exception specifications are not allowed in type aliases}}
+  template<typename U> using F = void(*)(int n) &&; // expected-error {{pointer to function type cannot have '&&' qualifier}}
+  template<typename U> using G = __thread void(int n); // expected-error {{type name does not allow storage class to be specified}}
+  template<typename U> using H = constexpr int; // expected-error {{type name does not allow constexpr specifier}}
+
+  template<typename U> using Y = void(int n); // ok
+  template<typename U> using Z = void(int n) &&; // ok
+}
+
+namespace IllegalSyntax {
+  template<typename Z> using ::T = void(int n); // expected-error {{name defined in alias declaration must be an identifier}}
+  template<typename Z> using operator int = void(int n); // expected-error {{name defined in alias declaration must be an identifier}}
+  template<typename Z> using typename U = void; // expected-error {{name defined in alias declaration must be an identifier}}
+  template<typename Z> using typename ::V = void(int n); // expected-error {{name defined in alias declaration must be an identifier}}
+  template<typename Z> using typename ::operator bool = void(int n); // expected-error {{name defined in alias declaration must be an identifier}}
+}
+
+namespace VariableLengthArrays {
+  template<typename Z> using T = int[42]; // ok
+
+  int n = 32;
+  template<typename Z> using T = int[n]; // expected-error {{variable length array declaration not allowed at file scope}}
+
+  const int m = 42;
+  template<typename Z> using U = int[m]; // expected-note {{previous definition}}
+  template<typename Z> using U = int[42]; // ok
+  template<typename Z> using U = int; // expected-error {{type alias template redefinition with different types ('int' vs 'int [42]')}}
+}
+
+namespace RedeclFunc {
+  int f(int, char**);
+  template<typename Z> using T = int;
+  T<char> f(int, char **); // ok
+}
+
+namespace LookupFilter {
+  namespace N { template<typename U> using S = int; }
+  using namespace N;
+  template<typename U> using S = S<U>*; // ok
+}
+
+namespace InFunctions {
+  template<typename...T> struct S0 {
+    template<typename Z> using U = T*; // expected-error {{declaration type contains unexpanded parameter pack 'T'}}
+    U<char> u;
+  };
+
+  template<typename Z> using T1 = int;
+  template<typename Z> using T2 = int[-1]; // expected-error {{array size is negative}}
+  template<typename...T> struct S3 { // expected-note {{template parameter is declared here}}
+    template<typename Z> using T = int; // expected-error {{declaration of 'T' shadows template parameter}}
+  };
+  template<typename Z> using Z = Z;
+}
+
+namespace ClassNameRedecl {
+  class C0 {
+    // FIXME: this diagnostic is pretty poor
+    template<typename U> using C0 = int; // expected-error {{name defined in alias declaration must be an identifier}}
+  };
+  class C1 {
+    // FIXME: this diagnostic is pretty poor
+    template<typename U> using C1 = C1; // expected-error {{name defined in alias declaration must be an identifier}}
+  };
+  class C2 {
+    template<typename U> using C0 = C1; // ok
+  };
+  template<typename...T> class C3 {
+    template<typename U> using f = T; // expected-error {{declaration type contains unexpanded parameter pack 'T'}}
+  };
+  template<typename T> class C4 { // expected-note {{template parameter is declared here}}
+    template<typename U> using T = int; // expected-error {{declaration of 'T' shadows template parameter}}
+  };
+  class C5 {
+    class c; // expected-note {{previous definition}}
+    template<typename U> using c = int; // expected-error {{redefinition of 'c' as different kind of symbol}}
+    class d; // expected-note {{previous definition}}
+    template<typename U> using d = d; // expected-error {{redefinition of 'd' as different kind of symbol}}
+  };
+  class C6 {
+    class c { template<typename U> using C6 = int; }; // ok
+  };
+}
+
+class CtorDtorName {
+  template<typename T> using X = CtorDtorName;
+  X<int>(); // expected-error {{expected member name}}
+  ~X<int>(); // expected-error {{destructor cannot be declared using a type alias}}
+};
+
+namespace TagName {
+  template<typename Z> using S = struct { int n; }; // expected-error {{can not be defined}}
+  template<typename Z> using T = class { int n; }; // expected-error {{can not be defined}}
+  template<typename Z> using U = enum { a, b, c }; // expected-error {{can not be defined}}
+  template<typename Z> using V = struct V { int n; }; // expected-error {{redefinition of 'V' as different kind of symbol}} \
+                                                         expected-error {{'TagName::V' can not be defined in a type alias template}} \
+                                                         expected-note {{previous definition is here}}
+}
+
+namespace StdExample {
+  template<typename T, typename U> struct pair;
+
+  template<typename T> using handler_t = void (*)(T);
+  extern handler_t<int> ignore;
+  extern void (*ignore)(int);
+  // FIXME: we recover as if cell is an undeclared variable. the diagnostics are terrible!
+  template<typename T> using cell = pair<T*, cell<T>*>; // expected-error {{use of undeclared identifier 'cell'}} \
+                                                           expected-error {{'T' does not refer to a value}} \
+                                                           expected-note {{declared here}} \
+                                                           expected-error {{expected ';' after alias declaration}}
+}
+
+namespace Access {
+  class C0 {
+    template<typename Z> using U = int; // expected-note {{declared private here}}
+  };
+  C0::U<int> v; // expected-error {{'U' is a private member}}
+  class C1 {
+  public:
+    template<typename Z> using U = int;
+  };
+  C1::U<int> w; // ok
+}
+
+namespace VoidArg {
+  template<typename Z> using V = void;
+  V<int> f(int); // ok
+  V<char> g(V<double>); // expected-error {{empty parameter list defined with a type alias of 'void' not allowed}}
+}
+
+namespace Curried {
+  template<typename T, typename U> struct S;
+  template<typename T> template<typename U> using SS = S<T, U>; // expected-error {{extraneous template parameter list in alias template declaration}}
+}