2e2d90b986
This patch introduces `_LIBCPP_{BEGIN/END}_EXPLICIT_ABI_ANNOTATIONS` and
marks everything within an
`_LIBCPP_{BEGIN,END}_UNVERSIONED_NAMESPACE_STD` (and any derivatives
like `_LIBCPP_{BEGIN,END}_NAMESPACE_STD`) implicitly by default. This
allows us to drop `_LIBCPP_HIDE_FROM_ABI` in most of the code base,
except for functions which shouldn't be `_LIBCPP_HIDE_FROM_ABI`.
This patch doesn't remove any `_LIBCPP_HIDE_FROM_ABI`s, since we have
over 13k of them in the code base. Actually dropping them will happen
over some time to avoid too many merge conflicts.
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___NEW_EXCEPTIONS_H
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#define _LIBCPP___NEW_EXCEPTIONS_H
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#include <__config>
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#include <__exception/exception.h>
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#include <__verbose_abort>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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// <vcruntime_exception.h> defines its own std::bad_alloc type,
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// which we use in order to be ABI-compatible with other STLs on Windows.
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#if defined(_LIBCPP_ABI_VCRUNTIME)
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# include <vcruntime_exception.h>
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#endif
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_LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD
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_LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS
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#if !defined(_LIBCPP_ABI_VCRUNTIME)
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class _LIBCPP_EXPORTED_FROM_ABI bad_alloc : public exception {
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public:
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bad_alloc() _NOEXCEPT;
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_LIBCPP_HIDE_FROM_ABI bad_alloc(const bad_alloc&) _NOEXCEPT = default;
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_LIBCPP_HIDE_FROM_ABI bad_alloc& operator=(const bad_alloc&) _NOEXCEPT = default;
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~bad_alloc() _NOEXCEPT override;
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[[__nodiscard__]] const char* what() const _NOEXCEPT override;
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};
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class _LIBCPP_EXPORTED_FROM_ABI bad_array_new_length : public bad_alloc {
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public:
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bad_array_new_length() _NOEXCEPT;
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_LIBCPP_HIDE_FROM_ABI bad_array_new_length(const bad_array_new_length&) _NOEXCEPT = default;
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_LIBCPP_HIDE_FROM_ABI bad_array_new_length& operator=(const bad_array_new_length&) _NOEXCEPT = default;
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~bad_array_new_length() _NOEXCEPT override;
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[[__nodiscard__]] const char* what() const _NOEXCEPT override;
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};
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#elif defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0 // !_LIBCPP_ABI_VCRUNTIME
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// When _HAS_EXCEPTIONS == 0, these complete definitions are needed,
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// since they would normally be provided in vcruntime_exception.h
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class bad_alloc : public exception {
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public:
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bad_alloc() noexcept : exception("bad allocation") {}
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private:
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friend class bad_array_new_length;
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bad_alloc(char const* const __message) noexcept : exception(__message) {}
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};
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class bad_array_new_length : public bad_alloc {
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public:
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bad_array_new_length() noexcept : bad_alloc("bad array new length") {}
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};
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#endif // defined(_LIBCPP_ABI_VCRUNTIME) && defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0
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[[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void __throw_bad_alloc(); // not in C++ spec
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[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_bad_array_new_length() {
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#if _LIBCPP_HAS_EXCEPTIONS
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throw bad_array_new_length();
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#else
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_LIBCPP_VERBOSE_ABORT("bad_array_new_length was thrown in -fno-exceptions mode");
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#endif
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}
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_LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS
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_LIBCPP_END_UNVERSIONED_NAMESPACE_STD
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#endif // _LIBCPP___NEW_EXCEPTIONS_H
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