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2002-06-25 Jessica Han <jessica@cup.hp.com>

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* config/os/hpux/os_defines.h Define _GLIBCPP_VTABLE_PADDING
	* libsupc++/tinfo.cc Handle the 8 byte aligned vtable entries when
	_GLIBCPP_VTABLE_PADDING is defined.

From-SVN: r54991
This commit is contained in:
Jessica Han 2002-06-25 16:55:47 +00:00 committed by Benjamin Kosnik
parent 72ea9226fb
commit 0e20c0b56f
3 changed files with 42 additions and 9 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2002-06-25 Jessica Han <jessica@cup.hp.com>
* config/os/hpux/os_defines.h Define _GLIBCPP_VTABLE_PADDING
* libsupc++/tinfo.cc Handle the 8 byte aligned vtable entries when
_GLIBCPP_VTABLE_PADDING is defined.
2002-06-25 Benjamin Kosnik <bkoz@redhat.com>
* include/bits/stl_alloc.h: Additional formatting.

18
libstdc++-v3/config/os/hpux/os_defines.h
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@ -1,6 +1,6 @@
// Specific definitions for generic platforms -*- C++ -*-
// Specific definitions for HPUX -*- C++ -*-
// Copyright (C) 2000 Free Software Foundation, Inc.
// Copyright (C) 2000, 2002 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
@ -28,7 +28,7 @@
// the GNU General Public License.
#ifndef _GLIBCPP_OS_DEFINES
#define _GLIBCPP_OS_DEFINES
#define _GLIBCPP_OS_DEFINES 1
// System-specific #define, typedefs, corrections, etc, go here. This
// file will come before all others.
@ -62,7 +62,8 @@
We also force _GLIBCPP_USE_LONG_LONG here so that we don't have
to bastardize configure to deal with this sillyness. */
namespace std {
namespace std
{
#ifndef __LP64__
__extension__ extern "C" long long strtoll (const char *, char **, int)
__asm ("__strtoll");
@ -75,5 +76,14 @@ namespace std {
__asm ("strtoul");
#endif
}
#define _GLIBCPP_USE_LONG_LONG 1
// HPUX on IA64 requires vtable to be 64 bit aligned even at 32 bit
// mode. We need to pad the vtable structure to achieve this.
#if !defined(_LP64) && defined (__ia64__)
#define _GLIBCPP_VTABLE_PADDING 8
typedef long int __padding_type;
#endif
#endif

27
libstdc++-v3/libsupc++/tinfo.cc
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@ -28,6 +28,7 @@
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <bits/c++config.h>
#include <cstddef>
#include "tinfo.h"
#include "new" // for placement new
@ -91,12 +92,28 @@ namespace {
using namespace std;
using namespace abi;
// initial part of a vtable, this structure is used with offsetof, so we don't
// Initial part of a vtable, this structure is used with offsetof, so we don't
// have to keep alignments consistent manually.
struct vtable_prefix {
ptrdiff_t whole_object; // offset to most derived object
const __class_type_info *whole_type; // pointer to most derived type_info
const void *origin; // what a class's vptr points to
struct vtable_prefix
{
// Offset to most derived object.
ptrdiff_t whole_object;
// Additional padding if necessary.
#ifdef _GLIBCPP_VTABLE_PADDING
ptrdiff_t padding1;
#endif
// Pointer to most derived type_info.
const __class_type_info *whole_type;
// Additional padding if necessary.
#ifdef _GLIBCPP_VTABLE_PADDING
ptrdiff_t padding2;
#endif
// What a class's vptr points to.
const void *origin;
};
template <typename T>