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 // purposefully not using versioning namespace 21 namespace std { 22 #if !defined(_LIBCPP_ABI_VCRUNTIME) 23 24 class _LIBCPP_EXPORTED_FROM_ABI bad_alloc : public exception { 25 public: 26 bad_alloc() _NOEXCEPT; 27 _LIBCPP_HIDE_FROM_ABI bad_alloc(const bad_alloc&) _NOEXCEPT = default; 28 _LIBCPP_HIDE_FROM_ABI bad_alloc& operator=(const bad_alloc&) _NOEXCEPT = default; 29 ~bad_alloc() _NOEXCEPT override; 30 const char* what() const _NOEXCEPT override; 31 }; 32 33 class _LIBCPP_EXPORTED_FROM_ABI bad_array_new_length : public bad_alloc { 34 public: 35 bad_array_new_length() _NOEXCEPT; 36 _LIBCPP_HIDE_FROM_ABI bad_array_new_length(const bad_array_new_length&) _NOEXCEPT = default; 37 _LIBCPP_HIDE_FROM_ABI bad_array_new_length& operator=(const bad_array_new_length&) _NOEXCEPT = default; 38 ~bad_array_new_length() _NOEXCEPT override; 39 const char* what() const _NOEXCEPT override; 40 }; 41 42 #elif defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0 // !_LIBCPP_ABI_VCRUNTIME 43 44 // When _HAS_EXCEPTIONS == 0, these complete definitions are needed, 45 // since they would normally be provided in vcruntime_exception.h 46 class bad_alloc : public exception { 47 public: 48 bad_alloc() noexcept : exception("bad allocation") {} 49 50 private: 51 friend class bad_array_new_length; 52 53 bad_alloc(char const* const __message) noexcept : exception(__message) {} 54 }; 55 56 class bad_array_new_length : public bad_alloc { 57 public: 58 bad_array_new_length() noexcept : bad_alloc("bad array new length") {} 59 }; 60 61 #endif // defined(_LIBCPP_ABI_VCRUNTIME) && defined(_HAS_EXCEPTIONS) && _HAS_EXCEPTIONS == 0 62 63 [[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void __throw_bad_alloc(); // not in C++ spec 64 65 [[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_bad_array_new_length() { 66 #if _LIBCPP_HAS_EXCEPTIONS 67 throw bad_array_new_length(); 68 #else 69 _LIBCPP_VERBOSE_ABORT("bad_array_new_length was thrown in -fno-exceptions mode"); 70 #endif 71 } 72 } // namespace std 73 74 #endif // _LIBCPP___NEW_EXCEPTIONS_H 75