<p>Use <tt>__has_feature(cxx_deleted_functions)</tt> to determine if support for
deleted function definitions (with <tt>= delete</tt>) is enabled.</p>
-<h3 id="cxx_concepts">C++ TR concepts</h3>
-
-<p>Use <tt>__has_feature(cxx_concepts)</tt> to determine if support for
-concepts is enabled. clang does not currently implement this feature.</p>
-
<h3 id="cxx_lambdas">C++0x lambdas</h3>
<p>Use <tt>__has_feature(cxx_lambdas)</tt> to determine if support for
<h3 id="cxx_variadic_templates">C++0x variadic templates</h3>
<p>Use <tt>__has_feature(cxx_variadic_templates)</tt> to determine if support
-for templates taking any number of arguments with the ellipsis notation is
-enabled. clang does not yet fully implement this feature.</p>
+for variadic templates is enabled.</p>
<h3 id="cxx_inline_namespaces">C++0x inline namespaces</h3>
.Case("ownership_returns", true)
.Case("ownership_takes", true)
.Case("cxx_inline_namespaces", true)
- //.Case("cxx_concepts", false)
//.Case("cxx_lambdas", false)
//.Case("cxx_nullptr", false)
//.Case("cxx_rvalue_references", false)
// CHECK-NO-0X: no_nullptr
-#if __has_feature(cxx_concepts)
-int concepts();
-#else
-int no_concepts();
-#endif
-
-// CHECK-0X: no_concepts
-// CHECK-NO-0X: no_concepts
-
-
#if __has_feature(cxx_decltype)
int has_decltype();
#else