sigc++/adaptors/bind.h: Make bind_functor::bound_ public

It's used by sigc::visitor::do_visit_each().
Add a test case in tests/test_bind.cc.
Fixes #26

2 files changed, 10 insertions, 1 deletions

diff --git a/sigc++/adaptors/bind.h b/sigc++/adaptors/bind.h
index 7088c9f..7c187d1 100644
--- a/sigc++/adaptors/bind.h
+++ b/sigc++/adaptors/bind.h
@@ -161,7 +161,7 @@ struct bind_functor : public adapts<T_functor>
   {
   }
 
-private:
+  // public to avoid template friend declarations (used by visitor::do_visit_each())
   /// The arguments bound to the functor.
   std::tuple<bound_argument<T_bound>...> bound_;
 };
@@ -202,6 +202,7 @@ public:
   {
   }
 
+  // public to avoid template friend declarations (used by visitor::do_visit_each())
   /// The argument bound to the functor.
   std::tuple<bound_argument<T_type>...> bound_;
 };
diff --git a/tests/test_bind.cc b/tests/test_bind.cc
index 7d4a354..80dc9ea 100644
--- a/tests/test_bind.cc
+++ b/tests/test_bind.cc
@@ -146,11 +146,19 @@ main(int argc, char* argv[])
 
   sigc::slot<void()> sl;
   {
+    // Test without a positional template argument to std::bind().
     book guest_book("karl");
     sl = sigc::bind(&egon, std::ref(guest_book));
     sl();
     result_stream << " " << static_cast<std::string&>(guest_book);
     util->check_result(result_stream, "egon(string 'karl') egon was here");
+
+    // Test with a positional template argument to std::bind<>().
+    guest_book.get_name() = "ove";
+    sl = sigc::bind<0>(&egon, std::ref(guest_book));
+    sl();
+    result_stream << " " << static_cast<std::string&>(guest_book);
+    util->check_result(result_stream, "egon(string 'ove') egon was here");
   } // auto-disconnect
 
   sl();