63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/* C++ specific Solaris system support.
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Copyright (C) 2011-2021 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "cp/cp-tree.h"
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#include "stringpool.h"
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/* Before GCC 4.7, g++ defined __cplusplus 1 to avoid coping with the C++98
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overloads in Solaris system headers. Since this was fixed, 4 structure
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types would move to namespace std, breaking the Solaris libstdc++ ABI.
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To avoid this, we forcefully keep those types in the global namespace.
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This can be removed once the next major version of libstdc++ is
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released. */
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/* Cache the identifiers of the affected types to speed up lookup. */
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#define NUM_FGID 4
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static GTY(()) tree force_global_identifiers[NUM_FGID];
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/* Check if DECL is one of the affected types and move it to the global
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namespace if so. */
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tree
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solaris_cxx_decl_mangling_context (const_tree decl)
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{
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static bool init = false;
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int i = 0;
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if (!init)
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{
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force_global_identifiers[i++] = get_identifier ("div_t");
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force_global_identifiers[i++] = get_identifier ("ldiv_t");
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force_global_identifiers[i++] = get_identifier ("lconv");
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force_global_identifiers[i++] = get_identifier ("tm");
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init = true;
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}
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if (!(DECL_P (decl) && DECL_NAMESPACE_STD_P (CP_DECL_CONTEXT (decl))))
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return NULL_TREE;
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for (i = 0; i < NUM_FGID; i++)
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if (DECL_NAME (decl) == force_global_identifiers[i])
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return global_namespace;
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return NULL_TREE;
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}
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