re PR libstdc++/42019 (shared_ptr can not be used with -fno-rtti)

2009-11-20  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/42019
	* include/tr1/shared_ptr.h: Only use typeid when RTTI is enabled.
	* include/bits/shared_ptr_base.h: Likewise.
	* include/bits/shared_ptr.h: Likewise.
	* testsuite/tr1/2_general_utilities/shared_ptr/misc/42019.cc: New.
	* testsuite/20_util/shared_ptr/misc/42019.cc: New.

From-SVN: r154377

6 files changed, 167 insertions, 5 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 3ae6304..18fbe84 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,4 +1,13 @@
-2009-11-21  Paolo Carlini  <paolo.carlini@oracle.com>
+2009-11-20  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	PR libstdc++/42019
+	* include/tr1/shared_ptr.h: Only use typeid when RTTI is enabled.
+	* include/bits/shared_ptr_base.h: Likewise.
+	* include/bits/shared_ptr.h: Likewise.
+	* testsuite/tr1/2_general_utilities/shared_ptr/misc/42019.cc: New.
+	* testsuite/20_util/shared_ptr/misc/42019.cc: New.
+
+2009-11-20  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* src/compatibility-c++0x.cc (_Fnv_hash<4>, _Fnv_hash<8>): Add.
 
diff --git a/libstdc++-v3/include/bits/shared_ptr.h b/libstdc++-v3/include/bits/shared_ptr.h
index 796df14..60fdf2f 100644
--- a/libstdc++-v3/include/bits/shared_ptr.h
+++ b/libstdc++-v3/include/bits/shared_ptr.h
@@ -76,7 +76,13 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
   template<typename _Del, typename _Tp, _Lock_policy _Lp>
     inline _Del*
     get_deleter(const __shared_ptr<_Tp, _Lp>& __p)
-    { return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del))); }
+    {
+#ifdef __GXX_RTTI
+      return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del)));
+#else
+      return 0;
+#endif
+    }
 
 
   /**
diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h
index b8083e4..ff1282d 100644
--- a/libstdc++-v3/include/bits/shared_ptr_base.h
+++ b/libstdc++-v3/include/bits/shared_ptr_base.h
@@ -151,7 +151,13 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
       virtual void*
       _M_get_deleter(const std::type_info& __ti)
-      { return __ti == typeid(_Deleter) ? &_M_del._M_del : 0; }
+      {
+#ifdef __GXX_RTTI
+        return __ti == typeid(_Deleter) ? &_M_del._M_del : 0;
+#else
+        return 0;
+#endif
+      }
 
     protected:
       _My_Deleter      _M_del;  // copy constructor must not throw
@@ -209,9 +215,13 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       virtual void*
       _M_get_deleter(const std::type_info& __ti)
       {
+#ifdef __GXX_RTTI
 	return __ti == typeid(_Sp_make_shared_tag)
 	       ? static_cast<void*>(&_M_storage)
 	       : _Base_type::_M_get_deleter(__ti);
+#else
+        return 0;
+#endif
       }
 
     private:
@@ -740,6 +750,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 	owner_before(__weak_ptr<_Tp1, _Lp> const& __rhs) const
 	{ return _M_refcount._M_less(__rhs._M_refcount); }
 
+#ifdef __GXX_RTTI
     protected:
       // This constructor is non-standard, it is used by allocate_shared.
       template<typename _Alloc, typename... _Args>
@@ -753,6 +764,39 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 	  _M_ptr = static_cast<_Tp*>(__p);
 	  __enable_shared_from_this_helper(_M_refcount, _M_ptr, _M_ptr);
 	}
+#else
+      template<typename _Alloc>
+        struct _Deleter
+        {
+          void operator()(_Tp* __ptr)
+          {
+            _M_alloc.destroy(__ptr);
+            _M_alloc.deallocate(__ptr, 1);
+          }
+          _Alloc _M_alloc;
+        };
+
+      template<typename _Alloc, typename... _Args>
+	__shared_ptr(_Sp_make_shared_tag __tag, _Alloc __a, _Args&&... __args)
+	: _M_ptr(), _M_refcount()
+        {
+	  typedef typename _Alloc::template rebind<_Tp>::other _Alloc2;
+          _Deleter<_Alloc2> __del = { _Alloc2(__a) };
+          _M_ptr = __del._M_alloc.allocate(1);
+	  __try
+	    {
+              __del._M_alloc.construct(_M_ptr, std::forward<_Args>(__args)...);
+	    }
+	  __catch(...)
+	    {
+              __del._M_alloc.deallocate(_M_ptr, 1);
+	      __throw_exception_again;
+	    }
+          __shared_count<_Lp> __count(_M_ptr, __del, __del._M_alloc);
+          _M_refcount._M_swap(__count);
+	  __enable_shared_from_this_helper(_M_refcount, _M_ptr, _M_ptr);
+        }
+#endif
 
       template<typename _Tp1, _Lock_policy _Lp1, typename _Alloc,
 	       typename... _Args>
diff --git a/libstdc++-v3/include/tr1/shared_ptr.h b/libstdc++-v3/include/tr1/shared_ptr.h
index ba2caca..6176b5e 100644
--- a/libstdc++-v3/include/tr1/shared_ptr.h
+++ b/libstdc++-v3/include/tr1/shared_ptr.h
@@ -72,7 +72,13 @@ namespace tr1
       
       virtual void*
       _M_get_deleter(const std::type_info& __ti)
-      { return __ti == typeid(_Deleter) ? &_M_del : 0; }
+      {
+#ifdef __GXX_RTTI
+        return __ti == typeid(_Deleter) ? &_M_del : 0;
+#else
+        return 0;
+#endif
+      }
       
     private:
       _Sp_counted_base_impl(const _Sp_counted_base_impl&);
@@ -595,7 +601,13 @@ namespace tr1
   template<typename _Del, typename _Tp, _Lock_policy _Lp>
     inline _Del*
     get_deleter(const __shared_ptr<_Tp, _Lp>& __p)
-    { return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del))); }
+    {
+#ifdef __GXX_RTTI
+      return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del)));
+#else
+      return 0;
+#endif
+    }
 
 
   template<typename _Tp, _Lock_policy _Lp>
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/misc/42019.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/misc/42019.cc
new file mode 100644
index 0000000..bea1771
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/misc/42019.cc
@@ -0,0 +1,56 @@
+// { dg-options "-std=gnu++0x -fno-rtti" }
+// Copyright (C) 2009 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/>.
+
+// 20.8.15.2 Template class shared_ptr [util.smartptr.shared]
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+// libstdc++/42019
+
+class A {};
+
+struct B {
+  explicit B(int i) : i(i) { }
+  int i;
+};
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<A> spA = std::make_shared<A>();
+
+  VERIFY( spA.get() != 0 );
+}
+
+void test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::shared_ptr<B> spB = std::make_shared<B>(99);
+
+  VERIFY( spB->i == 99 );
+}
+
+int main()
+{
+  test01();
+  test02();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/misc/42019.cc b/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/misc/42019.cc
new file mode 100644
index 0000000..c52aa8a
--- /dev/null
+++ b/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/misc/42019.cc
@@ -0,0 +1,35 @@
+// { dg-options "-fno-rtti" }
+// Copyright (C) 2009 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/>.
+
+// TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
+
+#include <tr1/memory>
+
+// libstdc++/42019
+class A {};
+
+void test01()
+{
+  std::tr1::shared_ptr<A> spA;
+}
+
+int main()
+{
+  test01();
+  return 0;
+}