1 files changed, 38 insertions, 0 deletions
diff --git a/clang/test/SemaTemplate/instantiate-expr-5.cpp b/clang/test/SemaTemplate/instantiate-expr-5.cpp
new file mode 100644
index 0000000..13b7eae
--- /dev/null
+++ b/clang/test/SemaTemplate/instantiate-expr-5.cpp
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+template <class A> int x(A x) { return x++; }
+int y() { return x<int>(1); }
+
+namespace PR5880 {
+  template<typename T>
+  struct A { 
+    static const int a  = __builtin_offsetof(T, a.array[5].m); // expected-error{{no member named 'a' in 'HasM'}}
+  };
+  struct HasM {
+    float m;
+  };
+
+  struct ArrayOfHasM {
+    HasM array[10];
+  };
+
+  struct B { ArrayOfHasM a; };
+  A<B> x;
+  A<HasM> x2; // expected-note{{in instantiation of}}
+
+  template<typename T>
+  struct AnonymousUnion {
+    union {
+      int i;
+      float f;
+    };
+  };
+
+  template<typename T>
+  void test_anon_union() {
+    int array1[__builtin_offsetof(AnonymousUnion<T>, f) == 0? 1 : -1];
+    int array2[__builtin_offsetof(AnonymousUnion<int>, f) == 0? 1 : -1];
+  }
+
+  template void test_anon_union<int>();
+}