Replace gnu::unique_ptr with std::unique_ptr

Now that GCC is compiled as C++11 there is no need to keep the C++03
implementation of gnu::unique_ptr.

This removes the unique-ptr.h header and replaces it with <memory> in
system.h, and changes the INCLUDE_UNIQUE_PTR macro to INCLUDE_MEMORY.
Uses of gnu::unique_ptr and gnu::move can be replaced with
std::unique_ptr and std::move. There are no uses of unique_xmalloc_ptr
or xmalloc_deleter in GCC.

gcc/analyzer/ChangeLog:

	* engine.cc: Define INCLUDE_MEMORY instead of INCLUDE_UNIQUE_PTR.

gcc/c-family/ChangeLog:

	* known-headers.cc: Define INCLUDE_MEMORY instead of
	INCLUDE_UNIQUE_PTR.
	* name-hint.h: Likewise.
	(class name_hint): Use std::unique_ptr instead of gnu::unique_ptr.

gcc/c/ChangeLog:

	* c-decl.c: Define INCLUDE_MEMORY instead of INCLUDE_UNIQUE_PTR.
	* c-parser.c: Likewise.

gcc/cp/ChangeLog:

	* error.c: Define INCLUDE_MEMORY instead of
	INCLUDE_UNIQUE_PTR.
	* lex.c: Likewise.
	* name-lookup.c: Likewise.
	(class namespace_limit_reached): Use std::unique_ptr instead of
	gnu::unique_ptr.
	(suggest_alternatives_for): Use std::move instead of gnu::move.
	(suggest_alternatives_in_other_namespaces): Likewise.
	* parser.c: Define INCLUDE_MEMORY instead of INCLUDE_UNIQUE_PTR.

gcc/ChangeLog:

	* Makefile.in: Remove unique-ptr-tests.o.
	* selftest-run-tests.c (selftest::run_tests): Remove
	unique_ptr_tests_cc_tests.
	* selftest.h (unique_ptr_tests_cc_tests): Remove.
	* system.h: Check INCLUDE_MEMORY instead of INCLUDE_UNIQUE_PTR
	and include <memory> instead of "unique-ptr.h".
	* unique-ptr-tests.cc: Removed.

include/ChangeLog:

	* unique-ptr.h: Removed.

1 files changed, 5 insertions, 5 deletions

diff --git a/gcc/cp/name-lookup.c b/gcc/cp/name-lookup.c
index 229ba45..6b5e434 100644
--- a/gcc/cp/name-lookup.c
+++ b/gcc/cp/name-lookup.c
@@ -19,7 +19,7 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
-#define INCLUDE_UNIQUE_PTR
+#define INCLUDE_MEMORY
 #include "system.h"
 #include "coretypes.h"
 #include "cp-tree.h"
@@ -6340,7 +6340,7 @@ class namespace_limit_reached : public deferred_diagnostic
 {
  public:
   namespace_limit_reached (location_t loc, unsigned limit, tree name,
-			   gnu::unique_ptr<deferred_diagnostic> wrapped)
+			   std::unique_ptr<deferred_diagnostic> wrapped)
   : deferred_diagnostic (loc),
     m_limit (limit), m_name (name),
     m_wrapped (move (wrapped))
@@ -6360,7 +6360,7 @@ class namespace_limit_reached : public deferred_diagnostic
  private:
   unsigned m_limit;
   tree m_name;
-  gnu::unique_ptr<deferred_diagnostic> m_wrapped;
+  std::unique_ptr<deferred_diagnostic> m_wrapped;
 };
 
 /* Subclass of deferred_diagnostic, for use when issuing a single suggestion.
@@ -6604,7 +6604,7 @@ suggest_alternatives_for (location_t location, tree name,
   if (!result)
     result = suggest_alternatives_for_1 (location, name, suggest_misspellings);
 
-  return ns_hints.maybe_decorate_with_limit (gnu::move (result));
+  return ns_hints.maybe_decorate_with_limit (std::move (result));
 }
 
 /* The second half of suggest_alternatives_for, for when no exact matches
@@ -6649,7 +6649,7 @@ suggest_alternatives_in_other_namespaces (location_t location, tree name)
 
   name_hint result = ns_hints.convert_candidates_to_name_hint ();
 
-  return ns_hints.maybe_decorate_with_limit (gnu::move (result));
+  return ns_hints.maybe_decorate_with_limit (std::move (result));
 }
 
 /* A well-known name within the C++ standard library, returned by