exception (get_terminate(), [...]): Declare.

* libsupc++/exception (get_terminate(), get_unexpected()): Declare.
	* libsupc++/eh_terminate.cc (get_terminate() , set_unexpected()):
	Define.
	(set_terminate(terminate_handler)): Set atomically.
	(set_unexpected(terminate_handler)): Likewise.
	* libsupc++/new (get_new_handler()): Declare.
	* libsupc++/new_handler.cc (get_new_handler()): Define.
	(set_new_handler(new_handler)): Set atomically.
	(__new_handler): Use internal linkage.
	* libsupc++/new_op.cc (operator new): Use get_new_handler().
	* libsupc++/new_opnt.cc (operator new): Likewise.
	* acinclude.m4: Bump libtool_VERSION to 6:19:0.
	* configure: Regenerate.
	* libsupc++/Makefile.am: Compile above files with -std=gnu++11.
	* libsupc++/Makefile.in: Regenerate.
	* config/abi/pre/gnu.ver: Add new exports.
	* doc/xml/manual/status_cxx2011.xml: Update.
	* testsuite/18_support/headers/exception/synopsis.cc: Check accessors
	for handlers.
	* testsuite/18_support/headers/new/synopsis.cc: Likewise.
	* testsuite/18_support/new_handler.cc: New.
	* testsuite/18_support/terminate_handler.cc: New.
	* testsuite/18_support/unexpected_handler.cc: New.

From-SVN: r197380

libstdc++-v3/ChangeLog

@@ -1,3 +1,29 @@
+2013-04-03  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	* libsupc++/exception (get_terminate(), get_unexpected()): Declare.
+	* libsupc++/eh_terminate.cc (get_terminate() , set_unexpected()):
+	Define.
+	(set_terminate(terminate_handler)): Set atomically.
+	(set_unexpected(terminate_handler)): Likewise.
+	* libsupc++/new (get_new_handler()): Declare.
+	* libsupc++/new_handler.cc (get_new_handler()): Define.
+	(set_new_handler(new_handler)): Set atomically.
+	(__new_handler): Use internal linkage.
+	* libsupc++/new_op.cc (operator new): Use get_new_handler().
+	* libsupc++/new_opnt.cc (operator new): Likewise.
+	* acinclude.m4: Bump libtool_VERSION to 6:19:0.
+	* configure: Regenerate.
+	* libsupc++/Makefile.am: Compile above files with -std=gnu++11.
+	* libsupc++/Makefile.in: Regenerate.
+	* config/abi/pre/gnu.ver: Add new exports.
+	* doc/xml/manual/status_cxx2011.xml: Update.
+	* testsuite/18_support/headers/exception/synopsis.cc: Check accessors
+	for handlers.
+	* testsuite/18_support/headers/new/synopsis.cc: Likewise.
+	* testsuite/18_support/new_handler.cc: New.
+	* testsuite/18_support/terminate_handler.cc: New.
+	* testsuite/18_support/unexpected_handler.cc: New.
+
 2013-04-02  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* doc/xml/manual/appendix_contributing.xml: Remove broken link and

libstdc++-v3/acinclude.m4

@@ -3241,7 +3241,7 @@ changequote([,])dnl
 fi
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:18:0
+libtool_VERSION=6:19:0
 
 # Everything parsed; figure out what files and settings to use.
 case $enable_symvers in

libstdc++-v3/config/abi/pre/gnu.ver

@@ -1344,6 +1344,19 @@ GLIBCXX_3.4.18 {
 
 } GLIBCXX_3.4.17;
 
+GLIBCXX_3.4.19 {
+
+    # std::get_new_handler()
+    _ZSt15get_new_handlerv;
+
+    # std::get_terminate()
+    _ZSt13get_terminatev;
+
+    # std::get_unexpected()
+    _ZSt14get_unexpectedv;
+
+} GLIBCXX_3.4.18;
+
 # Symbols in the support library (libsupc++) have their own tag.
 CXXABI_1.3 {
 

libstdc++-v3/configure

@@ -71477,7 +71477,7 @@ $as_echo "$as_me: WARNING: === Symbol versioning will be disabled." >&2;}
 fi
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:18:0
+libtool_VERSION=6:19:0
 
 # Everything parsed; figure out what files and settings to use.
 case $enable_symvers in

libstdc++-v3/doc/xml/manual/status_cxx2011.xml

@@ -154,13 +154,10 @@ particular release.
       <entry>C library dependency for quick_exit, at_quick_exit</entry>
     </row>
     <row>
-      <?dbhtml bgcolor="#B0B0B0" ?>
       <entry>18.6</entry>
       <entry>Dynamic memory management</entry>
-      <entry>Partial</entry>
+      <entry>Y</entry>
-      <entry>Missing <code>get_new_handler</code>.
+      <entry/>
-             <code>set_new_handler</code> is not thread-safe.
-      </entry>
     </row>
     <row>
       <entry>18.7</entry>
@@ -205,13 +202,10 @@ particular release.
       <entry/>
     </row>
     <row>
-      <?dbhtml bgcolor="#B0B0B0" ?>
       <entry>18.8.3</entry>
       <entry>Abnormal termination</entry>
-      <entry>Partial</entry>
+      <entry>Y</entry>
-      <entry>Missing <code>get_terminate</code>.
+      <entry/>
-             <code>set_terminate</code> is not thread-safe.
-      </entry>
     </row>
     <row>
       <entry>18.8.4</entry>
@@ -2616,12 +2610,9 @@ particular release.
       <entry/>
     </row>
     <row>
-      <?dbhtml bgcolor="#B0B0B0" ?>
       <entry>D.11</entry>
       <entry>Violating exception-specifications</entry>
-      <entry>Partial</entry>
+      <entry/>
-      <entry>Missing <code>get_unexpected</code>.
-             <code>set_unexpected</code> is not thread-safe.
       </entry>
     </row>
 

libstdc++-v3/libsupc++/Makefile.am

@@ -106,31 +106,51 @@ cp-demangle.o: cp-demangle.c
 	$(C_COMPILE) -DIN_GLIBCPP_V3 -Wno-error -c $<
 
 
-# Use special rules for the C++0x sources so that the proper flags are passed.
+# Use special rules for the C++11 sources so that the proper flags are passed.
 eh_ptr.lo: eh_ptr.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 eh_ptr.o: eh_ptr.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+eh_terminate.lo: eh_terminate.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+eh_terminate.o: eh_terminate.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 eh_throw.lo: eh_throw.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 eh_throw.o: eh_throw.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 guard.lo: guard.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 guard.o: guard.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 atexit_thread.lo: atexit_thread.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 atexit_thread.o: atexit_thread.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 nested_exception.lo: nested_exception.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 nested_exception.o: nested_exception.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_handler.lo: new_handler.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_handler.o: new_handler.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_op.lo: new_op.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_op.o: new_op.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_opnt.lo: new_opnt.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_opnt.o: new_opnt.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 # AM_CXXFLAGS needs to be in each subdirectory so that it can be
 # modified in a per-library or per-sub-library way.  Need to manually

libstdc++-v3/libsupc++/Makefile.in

@@ -787,31 +787,51 @@ cp-demangle.lo: cp-demangle.c
 cp-demangle.o: cp-demangle.c
 	$(C_COMPILE) -DIN_GLIBCPP_V3 -Wno-error -c $<
 
-# Use special rules for the C++0x sources so that the proper flags are passed.
+# Use special rules for the C++11 sources so that the proper flags are passed.
 eh_ptr.lo: eh_ptr.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 eh_ptr.o: eh_ptr.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+eh_terminate.lo: eh_terminate.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+eh_terminate.o: eh_terminate.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 eh_throw.lo: eh_throw.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 eh_throw.o: eh_throw.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 guard.lo: guard.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 guard.o: guard.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 atexit_thread.lo: atexit_thread.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 atexit_thread.o: atexit_thread.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 nested_exception.lo: nested_exception.cc
-	$(LTCXXCOMPILE) -std=gnu++0x -c $<
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
 nested_exception.o: nested_exception.cc
-	$(CXXCOMPILE) -std=gnu++0x -c $<
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_handler.lo: new_handler.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_handler.o: new_handler.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_op.lo: new_op.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_op.o: new_op.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
+
+new_opnt.lo: new_opnt.cc
+	$(LTCXXCOMPILE) -std=gnu++11 -c $<
+new_opnt.o: new_opnt.cc
+	$(CXXCOMPILE) -std=gnu++11 -c $<
 
 install-stdHEADERS: $(std_HEADERS)
 	@$(NORMAL_INSTALL)

libstdc++-v3/libsupc++/eh_terminate.cc

@@ -45,7 +45,7 @@ __cxxabiv1::__terminate (std::terminate_handler handler) throw ()
 void
 std::terminate () throw()
 {
-  __terminate (__terminate_handler);
+  __terminate (get_terminate ());
 }
 
 void
@@ -58,21 +58,37 @@ __cxxabiv1::__unexpected (std::unexpected_handler handler)
 void
 std::unexpected ()
 {
-  __unexpected (__unexpected_handler);
+  __unexpected (get_unexpected ());
 }
 
 std::terminate_handler
 std::set_terminate (std::terminate_handler func) throw()
 {
-  std::terminate_handler old = __terminate_handler;
+  std::terminate_handler old;
-  __terminate_handler = func;
+  __atomic_exchange (&__terminate_handler, &func, &old, __ATOMIC_ACQ_REL);
   return old;
 }
 
+std::terminate_handler
+std::get_terminate () noexcept
+{
+  std::terminate_handler func;
+  __atomic_load (&__terminate_handler, &func, __ATOMIC_ACQUIRE);
+  return func;
+}
+
 std::unexpected_handler
 std::set_unexpected (std::unexpected_handler func) throw()
 {
-  std::unexpected_handler old = __unexpected_handler;
+  std::unexpected_handler old;
-  __unexpected_handler = func;
+  __atomic_exchange (&__unexpected_handler, &func, &old, __ATOMIC_ACQ_REL);
   return old;
 }
+
+std::unexpected_handler
+std::get_unexpected () noexcept
+{
+  std::unexpected_handler func;
+  __atomic_load (&__unexpected_handler, &func, __ATOMIC_ACQUIRE);
+  return func;
+}

libstdc++-v3/libsupc++/exception

@@ -92,6 +92,11 @@ namespace std
   /// Takes a new handler function as an argument, returns the old function.
   terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT;
 
+#if __cplusplus >= 201103L
+  /// Return the current terminate handler.
+  terminate_handler get_terminate() noexcept;
+#endif
+
   /** The runtime will call this function if %exception handling must be
    *  abandoned for any reason.  It can also be called by the user.  */
   void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__));
@@ -99,6 +104,11 @@ namespace std
   /// Takes a new handler function as an argument, returns the old function.
   unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT;
 
+#if __cplusplus >= 201103L
+  /// Return the current unexpected handler.
+  unexpected_handler get_unexpected() noexcept;
+#endif
+
   /** The runtime will call this function if an %exception is thrown which
    *  violates the function's %exception specification.  */
   void unexpected() __attribute__ ((__noreturn__));

libstdc++-v3/libsupc++/new

@@ -75,6 +75,11 @@ namespace std
   /// Takes a replacement handler as the argument, returns the
   /// previous handler.
   new_handler set_new_handler(new_handler) throw();
+
+#if __cplusplus >= 201103L
+  /// Return the current new handler.
+  new_handler get_new_handler() noexcept;
+#endif
 } // namespace std
 
 //@{

libstdc++-v3/libsupc++/new_handler.cc

@@ -28,12 +28,24 @@
 const std::nothrow_t std::nothrow = { };
 
 using std::new_handler;
-new_handler __new_handler;
+namespace
+{
+  new_handler __new_handler;
+}
 
 new_handler
 std::set_new_handler (new_handler handler) throw()
 {
-  new_handler prev_handler = __new_handler;
+  new_handler prev_handler;
-  __new_handler = handler;
+  __atomic_exchange (&__new_handler, &handler, &prev_handler,
+		     __ATOMIC_ACQ_REL);
   return prev_handler;
 }
+
+new_handler
+std::get_new_handler () noexcept
+{
+  new_handler handler;
+  __atomic_load (&__new_handler, &handler, __ATOMIC_ACQUIRE);
+  return handler;
+}

libstdc++-v3/libsupc++/new_op.cc

@@ -38,8 +38,6 @@ using std::malloc;
 extern "C" void *malloc (std::size_t);
 #endif
 
-extern new_handler __new_handler;
-
 _GLIBCXX_WEAK_DEFINITION void *
 operator new (std::size_t sz) _GLIBCXX_THROW (std::bad_alloc)
 {
@@ -51,7 +49,7 @@ operator new (std::size_t sz) _GLIBCXX_THROW (std::bad_alloc)
   p = (void *) malloc (sz);
   while (p == 0)
     {
-      new_handler handler = __new_handler;
+      new_handler handler = std::get_new_handler ();
       if (! handler)
 	_GLIBCXX_THROW_OR_ABORT(bad_alloc());
       handler ();

libstdc++-v3/libsupc++/new_opnt.cc

@@ -30,7 +30,6 @@ using std::new_handler;
 using std::bad_alloc;
 
 extern "C" void *malloc (std::size_t);
-extern new_handler __new_handler;
 
 _GLIBCXX_WEAK_DEFINITION void *
 operator new (std::size_t sz, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
@@ -43,7 +42,7 @@ operator new (std::size_t sz, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
   p = (void *) malloc (sz);
   while (p == 0)
     {
-      new_handler handler = __new_handler;
+      new_handler handler = std::get_new_handler ();
       if (! handler)
 	return 0;
       __try

libstdc++-v3/testsuite/18_support/headers/exception/synopsis.cc

@@ -1,4 +1,5 @@
 // { dg-do compile }
+// { dg-options "-std=gnu++11" }
 
 // Copyright (C) 2007-2013 Free Software Foundation, Inc.
 //
@@ -25,10 +26,12 @@ namespace std {
 
   typedef void (*unexpected_handler)();
   unexpected_handler set_unexpected(unexpected_handler  f ) throw();
+  unexpected_handler get_unexpected() noexcept;
   void unexpected();
 
   typedef void (*terminate_handler)();
   terminate_handler set_terminate(terminate_handler  f ) throw();
+  terminate_handler get_terminate() noexcept;
   void terminate() throw();
 
   bool uncaught_exception() throw();

libstdc++-v3/testsuite/18_support/headers/new/synopsis.cc

@@ -1,4 +1,5 @@
 // { dg-do compile }
+// { dg-options "-std=gnu++11" }
 
 // Copyright (C) 2007-2013 Free Software Foundation, Inc.
 //
@@ -25,6 +26,7 @@ namespace std {
   extern const nothrow_t nothrow;
   typedef void (*new_handler)();
   new_handler set_new_handler(new_handler new_p) throw();
+  new_handler get_new_handler() noexcept;
 }
 
 void* operator new(std::size_t size) throw(std::bad_alloc);

libstdc++-v3/testsuite/18_support/new_handler.cc

@@ -0,0 +1,39 @@
+// Copyright (C) 2013 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++11" }
+
+// 18.6.2 Storage allocation errors
+
+#include <new>
+#include <testsuite_hooks.h>
+
+void handler() { throw std::bad_alloc(); }
+
+void test01()
+{
+  auto prev = std::set_new_handler(handler);
+  VERIFY( prev == nullptr );
+  auto curr = std::get_new_handler();
+  VERIFY( curr == handler );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}

libstdc++-v3/testsuite/18_support/terminate_handler.cc

@@ -0,0 +1,40 @@
+// Copyright (C) 2013 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++11" }
+
+// 18.8.3 Abnormal termination
+
+#include <exception>
+#include <cstdlib>
+#include <testsuite_hooks.h>
+
+void handler() { std::abort(); }
+
+void test01()
+{
+  auto prev = std::set_terminate(handler);
+  VERIFY( prev != handler );
+  auto curr = std::get_terminate();
+  VERIFY( curr == handler );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}

libstdc++-v3/testsuite/18_support/unexpected_handler.cc

@@ -0,0 +1,40 @@
+// Copyright (C) 2013 Free Software Foundation
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++11" }
+
+// D.11 Violating exception-specifications
+
+#include <exception>
+#include <cstdlib>
+#include <testsuite_hooks.h>
+
+void handler() { std::abort(); }
+
+void test01()
+{
+  auto prev = std::set_unexpected(handler);
+  VERIFY( prev != handler );
+  auto curr = std::get_unexpected();
+  VERIFY( curr == handler );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}