Added rudimentary C++0x attribute support.

The following attributes are currently supported in C++0x attribute
lists (and in GNU ones as well):
 - align() - semantics believed to be conformant to n3000, except for
   redeclarations and what entities it may apply to
 - final - semantics believed to be conformant to CWG issue 817's proposed
   wording, except for redeclarations
 - noreturn - semantics believed to be conformant to n3000, except for
   redeclarations
 - carries_dependency - currently ignored (this is an optimization hint)

llvm-svn: 89543

1 files changed, 61 insertions, 0 deletions

diff --git a/clang/test/Parser/cxx0x-attributes.cpp b/clang/test/Parser/cxx0x-attributes.cpp
new file mode 100644
index 00000000000..a66e3e05976
--- /dev/null
+++ b/clang/test/Parser/cxx0x-attributes.cpp
@@ -0,0 +1,61 @@
+// RUN: clang-cc -fsyntax-only -verify -std=c++0x %s
+
+// Declaration syntax checks
+[[]] int before_attr;
+int after_attr [[]];
+int * [[]] ptr_attr;
+int array_attr [1] [[]];
+[[align(8)]] int aligned_attr;
+[[test::valid(for 42 [very] **** '+' symbols went on a trip; the end.)]]
+  int garbage_attr;
+void fn_attr () [[]];
+class [[]] class_attr {};
+extern "C++" [[]] int extern_attr;
+template <typename T> [[]] void template_attr ();
+
+int comma_attr [[,]]; // expected-error {{expected identifier}}
+int scope_attr [[foo::]]; // expected-error {{expected identifier}}
+int & [[]] ref_attr = after_attr; // expected-error {{an attribute list cannot appear here}}
+class foo {
+  void after_const_attr () const [[]]; // expected-error {{expected expression}}
+};
+extern "C++" [[]] { } // expected-error {{an attribute list cannot appear here}}
+[[]] template <typename T> void before_template_attr (); // expected-error {{an attribute list cannot appear here}}
+[[]] namespace ns { int i; } // expected-error {{an attribute list cannot appear here}}
+[[]] static_assert(true, ""); //expected-error {{an attribute list cannot appear here}}
+[[]] asm(""); // expected-error {{an attribute list cannot appear here}}
+
+[[]] using ns::i; // expected-error {{an attribute list cannot appear here}}
+[[]] using namespace ns;
+
+// Argument tests
+[[final()]] int final_params; // expected-error {{C++0x attribute 'final' cannot have an argument list}}
+[[align]] int aligned_no_params; // expected-error {{C++0x attribute 'align' must have an argument list}}
+[[align(i)]] int aligned_nonconst; // expected-error {{'aligned' attribute requires integer constant}}
+
+// Statement tests
+void foo () {
+  [[]] ;
+  [[]] { }
+  [[]] if (0) { }
+  [[]] for (;;);
+  [[]] do {
+    [[]] continue;
+  } while (0);
+  [[]] while (0);
+  
+  [[]] switch (i) {
+    [[]] case 0:
+    [[]] default:
+      [[]] break;
+  }
+  
+  [[]] goto there;
+  [[]] there:
+  
+  [[]] try {
+  } [[]] catch (...) { // expected-error {{an attribute list cannot appear here}}
+  }
+  
+  [[]] return;
+}