1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/linkage2.C b/gcc/testsuite/g++.dg/cpp0x/linkage2.C
new file mode 100644
index 000000000..f41c21a77
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/linkage2.C
@@ -0,0 +1,33 @@
+// DR 743: A type without linkage shall not be used as the type of a
+//     variable or function with linkage, unless
+//   o the variable or function has extern "C" linkage (7.5 [dcl.link]), or
+//   o the variable or function is not used (3.2 [basic.def.odr]) or is
+//   defined in the same translation unit.
+
+// { dg-options -std=c++0x }
+
+template <typename T> struct B {
+  void g(T){}
+  void h(T);			// { dg-error "never defined" }
+  friend void i(B, T){}
+  static T t1;			// { dg-error "never defined" }
+  static T t2;
+};
+
+template <typename T> T B<T>::t2 = { };
+
+enum {} e1;			// OK, defined
+extern enum {} e2;		// { dg-error "never defined" }
+extern "C" enum {} e3;		// OK, extern "C"
+
+void f() {
+  struct A { int x; };  // no linkage
+  A a = {1};
+  B<A> ba;              // declares B<A>::g(A) and B<A>::h(A)
+  ba.t1 = a;		// error, B<T>::t never defined
+  ba.t2 = a;		// OK
+  ba.g(a);              // OK
+  ba.h(a);              // error, B<T>::h never defined
+  i(ba, a);             // OK
+  e1+e2+e3;
+}