1 files changed, 37 insertions, 0 deletions
diff --git a/test/SemaCXX/overloaded-builtin-operators.cpp b/test/SemaCXX/overloaded-builtin-operators.cpp
index 8a49671f1ab8..b3c08085a695 100644
--- a/test/SemaCXX/overloaded-builtin-operators.cpp
+++ b/test/SemaCXX/overloaded-builtin-operators.cpp
@@ -200,3 +200,40 @@ namespace PR7319 {
     if (e1 > e2) {}
   }
 }
+
+namespace PR8477 {
+  struct Foo {
+    operator bool();
+    operator const char *();
+  };
+
+  bool doit() {
+    Foo foo;
+    long long zero = 0;
+    (void)(foo + zero);
+    (void)(foo - zero);
+    (void)(zero + foo);
+    (void)(zero[foo]);
+    (void)(foo - foo); // expected-error{{use of overloaded operator '-' is ambiguous}} \
+    // expected-note 4{{built-in candidate operator-}} \
+    // expected-note{{candidates omitted}}
+    return foo[zero] == zero;
+  }
+}
+
+namespace PR7851 {
+  struct X {
+    operator const void *() const;
+    operator void *();
+
+    operator const unsigned *() const;
+    operator unsigned *();
+  };
+
+  void f() {
+    X x;
+    x[0] = 1;
+    *x = 0;
+    (void)(x - x);
+  }
+}