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/* C++ specific Solaris system support.
Copyright (C) 2011-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "cp/cp-tree.h"
#include "stringpool.h"
/* Before GCC 4.7, g++ defined __cplusplus 1 to avoid coping with the C++98
overloads in Solaris system headers. Since this was fixed, 4 structure
types would move to namespace std, breaking the Solaris libstdc++ ABI.
To avoid this, we forcefully keep those types in the global namespace.
This can be removed once the next major version of libstdc++ is
released. */
/* Cache the identifiers of the affected types to speed up lookup. */
#define NUM_FGID 4
static GTY(()) tree force_global_identifiers[NUM_FGID];
/* Check if DECL is one of the affected types and move it to the global
namespace if so. */
tree
solaris_cxx_decl_mangling_context (const_tree decl)
{
static bool init = false;
int i = 0;
if (!init)
{
force_global_identifiers[i++] = get_identifier ("div_t");
force_global_identifiers[i++] = get_identifier ("ldiv_t");
force_global_identifiers[i++] = get_identifier ("lconv");
force_global_identifiers[i++] = get_identifier ("tm");
init = true;
}
if (!(DECL_P (decl) && DECL_NAMESPACE_STD_P (CP_DECL_CONTEXT (decl))))
return NULL_TREE;
for (i = 0; i < NUM_FGID; i++)
if (DECL_NAME (decl) == force_global_identifiers[i])
return global_namespace;
return NULL_TREE;
}
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