1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___NEW_EXCEPTIONS_H
10#define _LIBCPP___NEW_EXCEPTIONS_H
11
12#include <__config>
13#include <__exception/exception.h>
14#include <__verbose_abort>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20// <vcruntime_exception.h> defines its own std::bad_alloc type,
21// which we use in order to be ABI-compatible with other STLs on Windows.
22#if defined(_LIBCPP_ABI_VCRUNTIME)
23# include <vcruntime_exception.h>
24#endif
25
26_LIBCPP_BEGIN_UNVERSIONED_NAMESPACE_STD
27#if !defined(_LIBCPP_ABI_VCRUNTIME)
28
29class _LIBCPP_EXPORTED_FROM_ABI bad_alloc : public exception {
30public:
31 bad_alloc() _NOEXCEPT;
32 _LIBCPP_HIDE_FROM_ABI bad_alloc(const bad_alloc&) _NOEXCEPT = default;
33 _LIBCPP_HIDE_FROM_ABI bad_alloc& operator=(const bad_alloc&) _NOEXCEPT = default;
34 ~bad_alloc() _NOEXCEPT override;
35 [[__nodiscard__]] const char* what() const _NOEXCEPT override;
36};
37
38class _LIBCPP_EXPORTED_FROM_ABI bad_array_new_length : public bad_alloc {
39public:
40 bad_array_new_length() _NOEXCEPT;
41 _LIBCPP_HIDE_FROM_ABI bad_array_new_length(const bad_array_new_length&) _NOEXCEPT = default;
42 _LIBCPP_HIDE_FROM_ABI bad_array_new_length& operator=(const bad_array_new_length&) _NOEXCEPT = default;
43 ~bad_array_new_length() _NOEXCEPT override;
44 [[__nodiscard__]] const char* what() const _NOEXCEPT override;
45};
46
47#elif defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0 // !_LIBCPP_ABI_VCRUNTIME
48
49// When _HAS_EXCEPTIONS == 0, these complete definitions are needed,
50// since they would normally be provided in vcruntime_exception.h
51class bad_alloc : public exception {
52public:
53 bad_alloc() noexcept : exception("bad allocation") {}
54
55private:
56 friend class bad_array_new_length;
57
58 bad_alloc(char const* const __message) noexcept : exception(__message) {}
59};
60
61class bad_array_new_length : public bad_alloc {
62public:
63 bad_array_new_length() noexcept : bad_alloc("bad array new length") {}
64};
65
66#endif // defined(_LIBCPP_ABI_VCRUNTIME) && defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0
67
68[[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void __throw_bad_alloc(); // not in C++ spec
69
70[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_bad_array_new_length() {
71#if _LIBCPP_HAS_EXCEPTIONS
72 throw bad_array_new_length();
73#else
74 _LIBCPP_VERBOSE_ABORT("bad_array_new_length was thrown in -fno-exceptions mode");
75#endif
76}
77_LIBCPP_END_UNVERSIONED_NAMESPACE_STD
78
79#endif // _LIBCPP___NEW_EXCEPTIONS_H
80