[libsigcplusplus/libsigc++-2-8] tests: Use std::ref() instead of deprecated sigc::ref().

[Murray Cumming <murrayc src gnome org>]

commit 7dbe9c3c825c6892a96557a09ddec199ab4c4019
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Mar 10 17:32:55 2016 +0100

    tests: Use std::ref() instead of deprecated sigc::ref().

 sigc++/visit_each.h             |    4 ++--
 tests/test_bind.cc              |    6 +++---
 tests/test_bind_ref.cc          |    8 ++++----
 tests/test_bind_return.cc       |    6 +++---
 tests/test_copy_invalid_slot.cc |    2 +-
 tests/test_cpp11_lambda.cc      |   28 ++++++++++++++--------------
 tests/test_functor_trait.cc     |    6 +++---
 tests/test_limit_reference.cc   |    4 ++--
 tests/test_track_obj.cc         |    4 ++--
 9 files changed, 34 insertions(+), 34 deletions(-)
---
diff --git a/sigc++/visit_each.h b/sigc++/visit_each.h
index 82f4236..ab681cb 100644
--- a/sigc++/visit_each.h
+++ b/sigc++/visit_each.h
@@ -181,12 +181,12 @@ void visit_each_type(const T_action& _A_action, const T_functor& _A_functor)
 
   type_limited_action limited_action(_A_action);
 
-  //specifying the types of the template specialization prevents disconnection of bound trackable references 
(such as with sigc::ref()),
+  //specifying the types of the template specialization prevents disconnection of bound trackable references 
(such as with std::ref()),
   //probably because the visit_each<> specializations take various different template types,
   //in various sequences, and we are probably specifying only a subset of them with this.
   //
   //But this is required by the AIX (and maybe IRIX MipsPro  and Tru64) compilers.
-  //I guess that sigc::ref() therefore does not work on those platforms. murrayc
+  //I guess that std::ref() therefore does not work on those platforms. murrayc
   // sigc::visit_each<type_limited_action, T_functor>(limited_action, _A_functor);
 
   //g++ (even slightly old ones) is our primary platform, so we could use the non-crashing version.
diff --git a/tests/test_bind.cc b/tests/test_bind.cc
index 845d54c..2d3862b 100644
--- a/tests/test_bind.cc
+++ b/tests/test_bind.cc
@@ -130,7 +130,7 @@ int main(int argc, char* argv[])
 
   // method pointer instead of functor
   book test_book("otto");
-  result_stream << sigc::bind<0>(&book::get_name, sigc::ref(test_book))();
+  result_stream << sigc::bind<0>(&book::get_name, std::ref(test_book))();
   util->check_result(result_stream, "otto");
 
   // test return type of bind_functor::operator() overload with no arguments
@@ -142,14 +142,14 @@ int main(int argc, char* argv[])
 
   // test references
   std::string str("guest book");
-  sigc::bind(&egon, sigc::ref(str))(); // Tell bind that it shall store a reference.
+  sigc::bind(&egon, std::ref(str))(); // Tell bind that it shall store a reference.
   result_stream << " " << str; // (This cannot be the default behaviour: just think about what happens if 
str dies!)
   util->check_result(result_stream, "egon(string 'guest book') egon was here");
 
   sigc::slot<void> sl;
   {
     book guest_book("karl");
-    sl = sigc::bind(&egon, sigc::ref(guest_book));
+    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");
diff --git a/tests/test_bind_ref.cc b/tests/test_bind_ref.cc
index 58bd55d..abac4cb 100644
--- a/tests/test_bind_ref.cc
+++ b/tests/test_bind_ref.cc
@@ -16,7 +16,7 @@ public:
   {}
 
   //non-copyable,
-  //so it can only be used with sigc::bind() via sigc::ref()
+  //so it can only be used with sigc::bind() via std::ref()
   Param(const Param&) = delete;
   Param& operator=(const Param&) = delete;
 
@@ -48,12 +48,12 @@ int main(int argc, char* argv[])
   util->check_result(result_stream, "");
 
   {
-    //Because Param derives from sigc::trackable(), sigc::ref() should disconnect
+    //Because Param derives from sigc::trackable(), std::ref() should disconnect
     // the signal handler when param is destroyed.
     Param param("murrayc");
     // A convoluted way to do
-    // slot_bound = sigc::bind(slot_full, sigc::ref(param));
-    slot_bound = sigc::bind< -1, sigc::reference_wrapper<Param> >(slot_full, sigc::ref(param));
+    // slot_bound = sigc::bind(slot_full, std::ref(param));
+    slot_bound = sigc::bind< -1, std::reference_wrapper<Param> >(slot_full, std::ref(param));
 
     result_stream << "Calling slot when param exists:";
     slot_bound();
diff --git a/tests/test_bind_return.cc b/tests/test_bind_return.cc
index 88c85ae..96e67a8 100644
--- a/tests/test_bind_return.cc
+++ b/tests/test_bind_return.cc
@@ -52,8 +52,8 @@ int main(int argc, char* argv[])
   // references.
   std::string str("guest book");
   // A convoluted way to do
-  // sigc::bind_return(foo(), sigc::ref(str))(6) = "main";
-  sigc::bind_return<sigc::reference_wrapper<std::string> >(foo(), sigc::ref(str))(6) = "main";
+  // sigc::bind_return(foo(), std::ref(str))(6) = "main";
+  sigc::bind_return<std::reference_wrapper<std::string> >(foo(), std::ref(str))(6) = "main";
   result_stream << str;
   util->check_result(result_stream, "foo(int 6) main");
 
@@ -67,7 +67,7 @@ int main(int argc, char* argv[])
   sigc::slot<bar, int> sl;
   {
     bar choco(-1);
-    sl = sigc::bind_return(foo(),sigc::ref(choco));
+    sl = sigc::bind_return(foo(),std::ref(choco));
     result_stream << sl(7);
     util->check_result(result_stream, "foo(int 7) -1");
   } // auto-disconnect
diff --git a/tests/test_copy_invalid_slot.cc b/tests/test_copy_invalid_slot.cc
index b480a15..b67c83e 100644
--- a/tests/test_copy_invalid_slot.cc
+++ b/tests/test_copy_invalid_slot.cc
@@ -30,7 +30,7 @@ int main(int argc, char* argv[])
   util->check_result(result_stream, "sigc::trackable instance at " + pointer_stream.str());
   pointer_stream.str("");
 
-  sigc::slot<void> foo = sigc::bind(sigc::ptr_fun(Foo), sigc::ref(*t));
+  sigc::slot<void> foo = sigc::bind(sigc::ptr_fun(Foo), std::ref(*t));
   foo();
   util->check_result(result_stream, "Foo(x)");
 
diff --git a/tests/test_cpp11_lambda.cc b/tests/test_cpp11_lambda.cc
index e97b80e..2e4acf8 100644
--- a/tests/test_cpp11_lambda.cc
+++ b/tests/test_cpp11_lambda.cc
@@ -182,9 +182,9 @@ int main(int argc, char* argv[])
   result_stream << ([] (int x) -> int { return ++x * 2; }(a_outer)) << " " << a_outer;
   util->check_result(result_stream, "4 1");
 
-  // gcc can't compile libsigc++ lambda expressions with sigc::ref() parameters.
+  // gcc can't compile libsigc++ lambda expressions with std::ref() parameters.
   // See https://bugzilla.gnome.org/show_bug.cgi?id=669128
-  //  std::cout << "((++_1)*2)(ref(a)): " << ((++_1)*2)(sigc::ref(a));
+  //  std::cout << "((++_1)*2)(ref(a)): " << ((++_1)*2)(std::ref(a));
   //  std::cout << "; a: "                << a                    << std::endl;
   result_stream << ([] (std::reference_wrapper<int> x) -> int { return ++x * 2; }(std::ref(a_outer)));
   result_stream << " " << a_outer;
@@ -199,7 +199,7 @@ int main(int argc, char* argv[])
   result_stream << " " << a_outer;
   util->check_result(result_stream, "8 4");
 
-  //  std::cout << "((--(*(&_1)))*2)(ref(a)): " << ((--(*(&_1)))*2)(sigc::ref(a));
+  //  std::cout << "((--(*(&_1)))*2)(ref(a)): " << ((--(*(&_1)))*2)(std::ref(a));
   //  std::cout << "; a: "                << a                    << std::endl;
   result_stream << ([] (std::reference_wrapper<int> x) -> int { return --(*(&x)) * 2; }(std::ref(a_outer)));
   result_stream << " " << a_outer;
@@ -241,15 +241,15 @@ int main(int argc, char* argv[])
   // - var() is used to create a lambda that holds a reference and is interchangable with ref() in lambda 
operator expressions
   // - cannot use std::endl without much hackery because it is defined as a template function
   // - cannot use "\n" without var() because arrays cannot be copied
-  //  (sigc::ref(std::cout) << sigc::constant(1) << sigc::var("\n"))();
+  //  (std::ref(std::cout) << sigc::constant(1) << sigc::var("\n"))();
   [](){ result_stream << 1 << "\n"; }();
   util->check_result(result_stream, "1\n");
 
-  //(sigc::ref(std::cout) << _1 << std::string("\n"))("hello world");
+  //(std::ref(std::cout) << _1 << std::string("\n"))("hello world");
   [](const char* a){ result_stream << a << std::string("\n"); }("hello world");
   util->check_result(result_stream, "hello world\n");
 
-  //(sigc::ref(std::cout) << sigc::static_cast_<int>(_1) << std::string("\n"))(1.234);
+  //(std::ref(std::cout) << sigc::static_cast_<int>(_1) << std::string("\n"))(1.234);
   [](double a){ result_stream << static_cast<int>(a) << std::string("\n"); }(1.234);
   util->check_result(result_stream, "1\n");
 
@@ -269,7 +269,7 @@ int main(int argc, char* argv[])
   sigc::slot<void, std::ostringstream&> sl1;
   {
     book guest_book("karl");
-    //sl1 = (sigc::var(std::cout) << sigc::ref(guest_book) << sigc::var("\n"));
+    //sl1 = (sigc::var(std::cout) << std::ref(guest_book) << sigc::var("\n"));
     // sl1 = [&guest_book](std::ostringstream& stream){ stream << guest_book << "\n"; }; // no 
auto-disconnect
     sl1 = sigc::track_obj([&guest_book](std::ostringstream& stream){ stream << guest_book << "\n"; }, 
guest_book);
     sl1(result_stream);
@@ -290,7 +290,7 @@ int main(int argc, char* argv[])
   result_stream << std::bind(&foo, std::placeholders::_2, std::placeholders::_1)(1, 2);
   util->check_result(result_stream, "foo(int 2, int 1) 9");
 
-  //std::cout << (sigc::group(sigc::mem_fun(&bar::test), _1, _2, _3)) (sigc::ref(the_bar), 1, 2) << 
std::endl;
+  //std::cout << (sigc::group(sigc::mem_fun(&bar::test), _1, _2, _3)) (std::ref(the_bar), 1, 2) << std::endl;
   // std::ref(the_bar) is not necessary. It can make the call ambiguous.
   // Even without std::ref() the_bar is not copied.
   result_stream << std::bind(std::mem_fn(&bar::test), std::placeholders::_1,
@@ -320,7 +320,7 @@ int main(int argc, char* argv[])
   sigc::slot<void> sl2;
   {
     book guest_book("karl");
-    //sl2 = sigc::group(&egon, sigc::ref(guest_book));
+    //sl2 = sigc::group(&egon, std::ref(guest_book));
     // sl2 = [&guest_book] () { egon(guest_book); }; // no auto-disconnect
     // sl2 = std::bind(&egon, std::ref(guest_book)); // does not compile (gcc 4.6.3)
     sl2 = sigc::track_obj([&guest_book] () { egon(guest_book); }, guest_book);
@@ -339,7 +339,7 @@ int main(int argc, char* argv[])
   // More auto-disconnect
   {
     book guest_book("charlie");
-    //sl2 = sigc::group(&egon, sigc::ref(guest_book));
+    //sl2 = sigc::group(&egon, std::ref(guest_book));
     // sl2 = std::bind(&egon, std::ref(guest_book)); // does not compile (gcc 4.6.3)
     auto fn2 = std::bind(&egon, std::ref(guest_book));
     //sl2 = fn2; // no auto-disconnect
@@ -469,9 +469,9 @@ int main(int argc, char* argv[])
   {
     int some_int = 0;
     sigc::signal<void> some_signal;
-    //some_signal.connect(sigc::group(&foo,sigc::ref(some_int)));
+    //some_signal.connect(sigc::group(&foo,std::ref(some_int)));
     //some_signal.connect(std::bind(&foo_group3, std::ref(some_int))); // does not compile (gcc 4.6.3)
-    //some_signal.connect(sigc::bind(&foo_group3, sigc::ref(some_int))); // compiles, but we prefer 
std::bind() or C++11 lambda
+    //some_signal.connect(sigc::bind(&foo_group3, std::ref(some_int))); // compiles, but we prefer 
std::bind() or C++11 lambda
     some_signal.connect([&some_int](){ foo_group3(some_int); });
     some_signal.emit();
     result_stream << " " << some_int;
@@ -483,10 +483,10 @@ int main(int argc, char* argv[])
     sigc::signal<void> some_signal;
     {
       bar_group4 some_bar;
-      //some_signal.connect(sigc::group(&foo,sigc::ref(some_bar)));
+      //some_signal.connect(sigc::group(&foo,std::ref(some_bar)));
       // disconnected automatically if some_bar goes out of scope
       //some_signal.connect([&some_bar](){ foo_group4(some_bar); }); // no auto-disconnect
-      //some_signal.connect(sigc::bind(&foo_group4, sigc::ref(some_bar))); // auto-disconnects, but we 
prefer C++11 lambda
+      //some_signal.connect(sigc::bind(&foo_group4, std::ref(some_bar))); // auto-disconnects, but we prefer 
C++11 lambda
       some_signal.connect(sigc::track_obj([&some_bar](){ foo_group4(some_bar); }, some_bar));
       some_signal.emit();
       util->check_result(result_stream, "foo_group4(bar_group4&)");
diff --git a/tests/test_functor_trait.cc b/tests/test_functor_trait.cc
index bf3b26e..2eb2eaa 100644
--- a/tests/test_functor_trait.cc
+++ b/tests/test_functor_trait.cc
@@ -83,15 +83,15 @@ int main(int argc, char* argv[])
   int k = 3;
   A a;
   result_stream << "hit all targets: ";
-  sigc::visit_each(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), sigc::ref(a), i), 
sigc::ptr_fun1(&bar)));
+  sigc::visit_each(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), std::ref(a), i), 
sigc::ptr_fun1(&bar)));
   util->check_result(result_stream, "hit all targets: other trackable int: 1 other ");
 
   result_stream << "hit all ints: ";
-  sigc::visit_each_type<int>(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), sigc::ref(a), 
j),sigc::ptr_fun1(&bar)));
+  sigc::visit_each_type<int>(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), std::ref(a), 
j),sigc::ptr_fun1(&bar)));
   util->check_result(result_stream, "hit all ints: int: 2 ");
 
   result_stream << "hit all trackable: ";
-  sigc::visit_each_type<trackable>(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), sigc::ref(a), 
k),sigc::ptr_fun1(&bar)));
+  sigc::visit_each_type<trackable>(print(), sigc::compose(sigc::bind(sigc::ptr_fun3(&foo), std::ref(a), 
k),sigc::ptr_fun1(&bar)));
   util->check_result(result_stream, "hit all trackable: trackable ");
 
   return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
diff --git a/tests/test_limit_reference.cc b/tests/test_limit_reference.cc
index d72efd1..d8f3539 100644
--- a/tests/test_limit_reference.cc
+++ b/tests/test_limit_reference.cc
@@ -45,12 +45,12 @@ int main(int argc, char* argv[])
   util->check_result(result_stream, "method()");
 
   auto param =
-    sigc::bind(sigc::slot<void, Derived&>(), sigc::ref(*instance));
+    sigc::bind(sigc::slot<void, Derived&>(), std::ref(*instance));
   param();
   util->check_result(result_stream, "");
 
   auto ret =
-    sigc::bind_return(sigc::slot<void>(), sigc::ref(*instance));
+    sigc::bind_return(sigc::slot<void>(), std::ref(*instance));
   ret();
   util->check_result(result_stream, "");
 
diff --git a/tests/test_track_obj.cc b/tests/test_track_obj.cc
index a6ce6ed..b0f6e9e 100644
--- a/tests/test_track_obj.cc
+++ b/tests/test_track_obj.cc
@@ -202,10 +202,10 @@ int main(int argc, char* argv[])
     sigc::signal<void> some_signal;
     {
       bar_group4 some_bar;
-      //some_signal.connect(sigc::group(&foo,sigc::ref(some_bar)));
+      //some_signal.connect(sigc::group(&foo,std::ref(some_bar)));
       // disconnected automatically if some_bar goes out of scope
       //some_signal.connect([&some_bar](){ foo_group4(some_bar); }); // no auto-disconnect
-      //some_signal.connect(sigc::bind(&foo_group4, sigc::ref(some_bar))); // auto-disconnects, but we 
prefer C++11 lambda
+      //some_signal.connect(sigc::bind(&foo_group4, std::ref(some_bar))); // auto-disconnects, but we prefer 
C++11 lambda
       some_signal.connect(sigc::track_obj([&some_bar](){ foo_group4(some_bar); }, some_bar));
       some_signal.emit();
       util->check_result(result_stream, "foo_group4(bar_group4&)");