/* C++ specific Solaris system support. Copyright (C) 2011-2020 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; } |