throw_allocator.h (__throw_allocator::allocate): Throw bad_alloc for out of memory conditions.

2007-06-01  Benjamin Kosnik  <bkoz@redhat.com>

	* include/ext/throw_allocator.h (__throw_allocator::allocate):
	Throw bad_alloc for out of memory conditions.	
	* testsuite/ext/throw_allocator/deallocate_global.cc: New.
	* testsuite/ext/throw_allocator/check_delete.cc: Same.
	* testsuite/ext/throw_allocator/check_allocate_max_size.cc: Same.
	* testsuite/ext/throw_allocator/check_deallocate_null.cc: Same.
	* testsuite/ext/throw_allocator/explicit_instantiation.cc: Same.
	* testsuite/ext/throw_allocator/check_new.cc: Same.
	* testsuite/ext/throw_allocator/deallocate_local.cc: Same.

From-SVN: r125261

libstdc++-v3/ChangeLog

+2007-06-01  Benjamin Kosnik  <bkoz@redhat.com>
+
+	* include/ext/throw_allocator.h (__throw_allocator::allocate):
+	Throw bad_alloc for out of memory conditions.	
+	* testsuite/ext/throw_allocator/deallocate_global.cc: New.
+	* testsuite/ext/throw_allocator/check_delete.cc: Same.
+	* testsuite/ext/throw_allocator/check_allocate_max_size.cc: Same.
+	* testsuite/ext/throw_allocator/check_deallocate_null.cc: Same.
+	* testsuite/ext/throw_allocator/explicit_instantiation.cc: Same.
+	* testsuite/ext/throw_allocator/check_new.cc: Same.
+	* testsuite/ext/throw_allocator/deallocate_local.cc: Same.
+
 2007-05-31  Paolo Carlini  <pcarlini@suse.de>
 
 	PR libstdc++/31426

libstdc++-v3/include/ext/throw_allocator.h

@@ -210,32 +210,35 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
       { return std::allocator<value_type>().max_size(); }
 
       pointer
-      allocate(size_type num, std::allocator<void>::const_pointer hint = 0)
+      allocate(size_type __n, std::allocator<void>::const_pointer hint = 0)
       {
+	if (__builtin_expect(__n > this->max_size(), false))
+	  std::__throw_bad_alloc();
+
 	throw_conditionally();
-	value_type* const a = std::allocator<value_type>().allocate(num, hint);
-	insert(a, sizeof(value_type) * num);
+	value_type* const a = std::allocator<value_type>().allocate(__n, hint);
+	insert(a, sizeof(value_type) * __n);
 	return a;
       }
 
       void
-      construct(pointer p, const T& val)
-      { return std::allocator<value_type>().construct(p, val); }
+      construct(pointer __p, const T& val)
+      { return std::allocator<value_type>().construct(__p, val); }
 
       void
-      destroy(pointer p)
-      { std::allocator<value_type>().destroy(p); }
+      destroy(pointer __p)
+      { std::allocator<value_type>().destroy(__p); }
 
       void
-      deallocate(pointer p, size_type num)
+      deallocate(pointer __p, size_type __n)
       {
-	erase(p, sizeof(value_type) * num);
-	std::allocator<value_type>().deallocate(p, num);
+	erase(__p, sizeof(value_type) * __n);
+	std::allocator<value_type>().deallocate(__p, __n);
       }
 
       void
-      check_allocated(pointer p, size_type num)
-      { throw_allocator_base::check_allocated(p, sizeof(value_type) * num); }
+      check_allocated(pointer __p, size_type __n)
+      { throw_allocator_base::check_allocated(__p, sizeof(value_type) * __n); }
 
       void
       check_allocated(size_type label)

libstdc++-v3/testsuite/ext/throw_allocator/check_allocate_max_size.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/throw_allocator.h>
+#include <testsuite_allocator.h>
+
+int main()
+{
+  typedef int value_type;
+  typedef __gnu_cxx::throw_allocator<value_type> allocator_type;
+  __gnu_test::check_allocate_max_size<allocator_type>();
+  return 0;
+}

libstdc++-v3/testsuite/ext/throw_allocator/check_deallocate_null.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <ext/throw_allocator.h>
+#include <testsuite_allocator.h>
+
+int main()
+{ 
+  typedef int value_type;
+  typedef __gnu_cxx::throw_allocator<value_type> allocator_type;
+  
+  try { __gnu_test::check_deallocate_null<allocator_type>(); }
+  catch (std::logic_error&)
+    {
+      // Should throw logic_error to catch null erase.
+    }
+
+  return 0;
+}
+

libstdc++-v3/testsuite/ext/throw_allocator/check_delete.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <cstdlib>
+#include <ext/throw_allocator.h>
+#include <testsuite_hooks.h>
+#include <testsuite_allocator.h>
+
+using __gnu_cxx::throw_allocator;
+
+void* 
+operator new(std::size_t n) throw(std::bad_alloc)
+{
+  new_called = true;
+  return std::malloc(n);
+}
+
+void
+operator delete(void *v) throw()
+{
+  delete_called = true;
+  return std::free(v);
+}
+
+// These just help tracking down error messages.
+void test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+  typedef throw_allocator<unsigned int> allocator_type;
+  VERIFY( bool(__gnu_test::check_delete<allocator_type, true>()) ); 
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
+

libstdc++-v3/testsuite/ext/throw_allocator/check_new.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <cstdlib>
+#include <ext/throw_allocator.h>
+#include <testsuite_hooks.h>
+#include <testsuite_allocator.h>
+
+using __gnu_cxx::throw_allocator;
+
+void* 
+operator new(std::size_t n) throw(std::bad_alloc)
+{
+  new_called = true;
+  return std::malloc(n);
+}
+
+void
+operator delete(void *v) throw()
+{
+  delete_called = true;
+  return std::free(v);
+}
+
+// These just help tracking down error messages.
+void test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+  typedef throw_allocator<unsigned int> allocator_type;
+  VERIFY( bool(__gnu_test::check_new<allocator_type, true>()) ); 
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
+

libstdc++-v3/testsuite/ext/throw_allocator/deallocate_global.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <string>
+#include <stdexcept>
+#include <ext/throw_allocator.h>
+#include <testsuite_hooks.h>
+
+static size_t count;
+
+struct count_check
+{
+  count_check() {}
+  ~count_check()
+  {
+    if (count != 0)
+      throw std::runtime_error("count isn't zero");
+  }
+};
+ 
+static count_check check;
+
+void* operator new(size_t size) throw(std::bad_alloc)
+{
+  printf("operator new is called \n");
+  void* p = malloc(size);
+  if (p == NULL)
+    throw std::bad_alloc();
+  count++;
+  return p;
+}
+ 
+void operator delete(void* p) throw()
+{
+  printf("operator delete is called \n");
+  if (p == NULL)
+    return;
+  count--;
+  if (count == 0)
+    printf("All memory released \n");
+  else
+    printf("%lu allocations to be released \n",
+	   static_cast<unsigned long>(count));
+  free(p);
+}
+
+typedef char char_t;
+typedef std::char_traits<char_t> traits_t;
+typedef __gnu_cxx::throw_allocator<char_t> allocator_t;
+typedef std::basic_string<char_t, traits_t, allocator_t> string_t;
+
+string_t s("bayou bend");
+
+int main()
+{
+  return 0;
+}

libstdc++-v3/testsuite/ext/throw_allocator/deallocate_local.cc

+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <string>
+#include <ext/throw_allocator.h>
+#include <testsuite_hooks.h>
+
+static size_t alloc_cnt;
+ 
+void* operator new(size_t size) throw(std::bad_alloc)
+{
+  printf("operator new is called \n");
+  void* p = malloc(size);
+  if (p == NULL)
+    throw std::bad_alloc();
+  alloc_cnt++;
+  return p;
+}
+ 
+void operator delete(void* p) throw()
+{
+  printf("operator delete is called \n");
+  if (p == NULL)
+    return;
+  alloc_cnt--;
+  if (alloc_cnt == 0)
+    printf("All memory released \n");
+  else
+    printf("%lu allocations to be released \n",
+	   static_cast<unsigned long>(alloc_cnt));
+  free(p);
+}
+
+typedef char char_t;
+typedef std::char_traits<char_t> traits_t;
+typedef __gnu_cxx::throw_allocator<char_t> allocator_t;
+typedef std::basic_string<char_t, traits_t, allocator_t> string_t;
+
+int main()
+{
+  bool test __attribute__((unused)) = true;
+  {
+    string_t s;
+    s += "bayou bend";
+  }
+  VERIFY( alloc_cnt == 0 );
+  return 0;
+}

libstdc++-v3/testsuite/ext/throw_allocator/explicit_instantiation.cc

+// { dg-do compile }
+
+//
+// Copyright (C) 2007 Free Software Foundation, Inc.
+//
+// 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <cstdlib>
+#include <ext/throw_allocator.h>
+
+template class __gnu_cxx::throw_allocator<int>;