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From: Matthew Malcomson <matmal01@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc(refs/vendors/ARM/heads/morello)] libstdc++: std::hash<{unsigned} __intcap> enablement Date: Fri, 21 Oct 2022 13:28:30 +0000 (GMT) [thread overview] Message-ID: <20221021132830.257B63853832@sourceware.org> (raw) https://gcc.gnu.org/g:c4e36618f181789f0b737631bf3c28726c2a1296 commit c4e36618f181789f0b737631bf3c28726c2a1296 Author: Victor Do Nascimento <Victor.DoNascimento@arm.com> Date: Fri Oct 21 14:27:23 2022 +0100 libstdc++: std::hash<{unsigned} __intcap> enablement Add explicit specializations of the hash class template for the signed and unsigned variants of the CHERI __intcap type via the _Cxx_hashtable_define_trivial_hash function macro. libstdc++-v3/ChangeLog: * include/bits/functional_hash.h (hash): Define overload for __intptr. * testsuite/20_util/hash/cheri_types.cc: New. Diff: --- libstdc++-v3/include/bits/functional_hash.h | 8 ++++ libstdc++-v3/testsuite/20_util/hash/cheri_types.cc | 48 ++++++++++++++++++++++ 2 files changed, 56 insertions(+) diff --git a/libstdc++-v3/include/bits/functional_hash.h b/libstdc++-v3/include/bits/functional_hash.h index 6ca79154fe0..2381fe80a90 100644 --- a/libstdc++-v3/include/bits/functional_hash.h +++ b/libstdc++-v3/include/bits/functional_hash.h @@ -158,6 +158,14 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION /// Explicit specialization for long long. _Cxx_hashtable_define_trivial_hash(long long) +#ifdef __CHERI__ + /// Explicit specialization for __intcap. + _Cxx_hashtable_define_trivial_hash(__intcap) + + /// Explicit specialization for unsigned __intcap. + _Cxx_hashtable_define_trivial_hash(unsigned __intcap) +#endif + /// Explicit specialization for unsigned short. _Cxx_hashtable_define_trivial_hash(unsigned short) diff --git a/libstdc++-v3/testsuite/20_util/hash/cheri_types.cc b/libstdc++-v3/testsuite/20_util/hash/cheri_types.cc new file mode 100644 index 00000000000..5959a3ac537 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/hash/cheri_types.cc @@ -0,0 +1,48 @@ +// { dg-do run { target c++11 } } +// +// Copyright (C) 2007-2022 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 3, 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 COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +#include <functional> +#include <climits> +#include <testsuite_hooks.h> + +template<typename T, T v> +void +do_test () +{ + using std::size_t; + + std::hash<T> h; + size_t r = h(v); + + VERIFY( static_cast<size_t>(v) == r ); +} + +int +main () +{ + constexpr intptr_t smax = LONG_MAX; + constexpr intptr_t smin = LONG_MIN; + constexpr uintptr_t umax = ULONG_MAX; + + do_test<intptr_t, smin>(); + do_test<intptr_t, smax>(); + do_test<uintptr_t, umax>(); + + return 0; +}
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