libstdc++: Add testsuite proc for testing deprecated features

This change adds options to tests that explicitly use deprecated
features, so that -D_GLIBCXX_USE_DEPRECATED=0 can be used to run the
rest of the testsuite. The tests that explicitly/intentionally use
deprecated features will still be able to use them, but they can be
disabled for the majority of tests.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* testsuite/23_containers/forward_list/operations/3.cc:
	Use lambda instead of std::bind2nd.
	* testsuite/20_util/function_objects/binders/3113.cc: Add
	options for testing deprecated features.
	* testsuite/20_util/pair/cons/99957.cc: Likewise.
	* testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
	* testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
	* testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
	Likewise.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise.
	* testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise.
	* testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise.
	* testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
	* testsuite/20_util/unique_ptr/cons/auto_ptr.cc: Likewise.
	* testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise.
	* testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
	Likewise.
	* testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
	Likewise.
	* testsuite/lib/dg-options.exp (dg_add_options_using-deprecated):
	New proc.

15 files changed, 24 insertions, 5 deletions

diff --git a/libstdc++-v3/testsuite/20_util/function_objects/binders/3113.cc b/libstdc++-v3/testsuite/20_util/function_objects/binders/3113.cc
index c4dd784..0b671ae 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/binders/3113.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/binders/3113.cc
@@ -17,6 +17,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-add-options using-deprecated }
+
 // 20.3.6 Binders
 
 #include <vector>
diff --git a/libstdc++-v3/testsuite/20_util/pair/cons/99957.cc b/libstdc++-v3/testsuite/20_util/pair/cons/99957.cc
index 150bcd5..82ec54c 100644
--- a/libstdc++-v3/testsuite/20_util/pair/cons/99957.cc
+++ b/libstdc++-v3/testsuite/20_util/pair/cons/99957.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wdeprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target { c++11 && { ! c++20 } } } }
 
 #include <utility>
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr.cc
index 9615897..82750dc 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do run { target c++11 } }
 
 // Copyright (C) 2005-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc
index 726df89..32af600 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target c++11 } }
 
 // Copyright (C) 2005-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc
index b052a6c..2f6e4db 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target c++11 } }
 
 // Copyright (C) 2008-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc
index 07e95b2..3131dd3 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target c++11 } }
 
 // Copyright (C) 2010-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr.cc
index af71f45..1308613 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do run { target c++11 } }
 
 // Copyright (C) 2005-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc
index 97254b0..67d64c6 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target c++11 } }
 
 // Copyright (C) 2005-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/creation/dr925.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/creation/dr925.cc
index 5822a77..87e8937 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/creation/dr925.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/creation/dr925.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do run { target c++11 } }
 
 // Copyright (C) 2010-2021 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr.cc
index 608a0a0..8c25b56 100644
--- a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr.cc
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do run { target c++11 } }
 
 // Copyright (C) 2010-2021 Free Software Foundation, Inc.
@@ -25,7 +26,7 @@
 
 struct A { };
 
-// 20.9.10.2.1 unique_ptr constructors [unique.ptr.single.ctor] 
+// 20.9.10.2.1 unique_ptr constructors [unique.ptr.single.ctor]
 
 // Construction from auto_ptr
 void
diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc
index abfc9d7..b9eb0b2 100644
--- a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc
@@ -1,4 +1,5 @@
 // { dg-options "-Wno-deprecated" }
+// { dg-add-options using-deprecated }
 // { dg-do compile { target c++11 } }
 
 // Copyright (C) 2010-2021 Free Software Foundation, Inc.
@@ -24,7 +25,7 @@
 
 struct A { };
 
-// 20.9.10.2.1 unique_ptr constructors [unique.ptr.single.ctor] 
+// 20.9.10.2.1 unique_ptr constructors [unique.ptr.single.ctor]
 
 // Construction from const auto_ptr
 void
diff --git a/libstdc++-v3/testsuite/23_containers/forward_list/operations/3.cc b/libstdc++-v3/testsuite/23_containers/forward_list/operations/3.cc
index 9792ff6..3773312 100644
--- a/libstdc++-v3/testsuite/23_containers/forward_list/operations/3.cc
+++ b/libstdc++-v3/testsuite/23_containers/forward_list/operations/3.cc
@@ -22,8 +22,6 @@
 #include <forward_list>
 #include <testsuite_hooks.h>
 
-#include <algorithm>
-
 // This test verifies the following:
 //   remove_if
 void
@@ -31,7 +29,7 @@ test01()
 {
   std::forward_list<int> fl ={0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
 
-  fl.remove_if(std::bind2nd(std::less<int>(),5));
+  fl.remove_if([](int i) { return i < 5; });
 
   std::forward_list<int>::const_iterator pos = fl.cbegin();
   VERIFY(*pos == 5);
diff --git a/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_erase_if.cc b/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_erase_if.cc
index 6f2ff44..d72526e 100644
--- a/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_erase_if.cc
+++ b/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_erase_if.cc
@@ -29,6 +29,8 @@
 // purpose. It is provided "as is" without express or implied
 // warranty.
 
+// { dg-add-options using-deprecated }
+
 /**
  * @file priority_queue_erase_if.cpp
  * Example showing how to conditionally erase values from a priority queue.
diff --git a/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_split_join.cc b/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_split_join.cc
index e4b017a..986f032 100644
--- a/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_split_join.cc
+++ b/libstdc++-v3/testsuite/ext/pb_ds/example/priority_queue_split_join.cc
@@ -29,6 +29,8 @@
 // purpose. It is provided "as is" without express or implied
 // warranty.
 
+// { dg-add-options using-deprecated }
+
 /**
  * @file priority_queue_split_join_example.cpp
  * A basic example showing how to split and join priority queues.
diff --git a/libstdc++-v3/testsuite/lib/dg-options.exp b/libstdc++-v3/testsuite/lib/dg-options.exp
index 872768f..79fa23a 100644
--- a/libstdc++-v3/testsuite/lib/dg-options.exp
+++ b/libstdc++-v3/testsuite/lib/dg-options.exp
@@ -316,6 +316,11 @@ proc add_options_for_libatomic { flags } {
     return $flags
 }
 
+# Add options to enable use of deprecated features.
+proc add_options_for_using-deprecated { flags } {
+    return "$flags -U_GLIBCXX_USE_DEPRECATED -D_GLIBCXX_USE_DEPRECATED=1"
+}
+
 # Like dg-options, but adds to the default options rather than replacing them.
 
 proc dg-additional-options { args } {