1 //===------------------------ stdexcept.cpp -------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
17 #include "system_error"
20 #define __has_include(inc) 0
25 #elif defined(LIBCXXRT) || __has_include(<cxxabi.h>)
29 // Note: optimize for size
31 #if ! defined(_LIBCPP_MSVC)
32 #pragma GCC visibility push(hidden)
43 typedef std::size_t unused_t;
44 typedef std::ptrdiff_t count_t;
46 static const std::ptrdiff_t offset = static_cast<std::ptrdiff_t>(2*sizeof(unused_t) +
49 count_t& count() const _NOEXCEPT {return *const_cast<count_t *>(reinterpret_cast<const count_t *>(str_ - sizeof(count_t)));}
51 explicit __libcpp_nmstr(const char* msg);
52 __libcpp_nmstr(const __libcpp_nmstr& s) _NOEXCEPT;
53 __libcpp_nmstr& operator=(const __libcpp_nmstr& s) _NOEXCEPT;
55 const char* c_str() const _NOEXCEPT {return str_;}
58 __libcpp_nmstr::__libcpp_nmstr(const char* msg)
60 std::size_t len = strlen(msg);
61 str_ = new char[len + 1 + offset];
62 unused_t* c = reinterpret_cast<unused_t*>(const_cast<char *>(str_));
66 std::memcpy(const_cast<char*>(c_str()), msg, len + 1);
70 __libcpp_nmstr::__libcpp_nmstr(const __libcpp_nmstr& s) _NOEXCEPT
73 __sync_add_and_fetch(&count(), 1);
77 __libcpp_nmstr::operator=(const __libcpp_nmstr& s) _NOEXCEPT
81 __sync_add_and_fetch(&count(), 1);
82 if (__sync_add_and_fetch(reinterpret_cast<count_t*>(const_cast<char*>(p)-sizeof(count_t)), count_t(-1)) < 0)
88 __libcpp_nmstr::~__libcpp_nmstr()
90 if (__sync_add_and_fetch(&count(), count_t(-1)) < 0)
91 delete [] (str_ - offset);
96 #if ! defined(_LIBCPP_MSVC)
97 #pragma GCC visibility pop
100 namespace std // purposefully not using versioning namespace
103 logic_error::logic_error(const string& msg)
105 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
106 ::new(s) __libcpp_nmstr(msg.c_str());
109 logic_error::logic_error(const char* msg)
111 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
112 ::new(s) __libcpp_nmstr(msg);
115 logic_error::logic_error(const logic_error& le) _NOEXCEPT
117 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
118 const __libcpp_nmstr *s2 = reinterpret_cast<const __libcpp_nmstr *>(&le.__imp_);
119 ::new(s) __libcpp_nmstr(*s2);
123 logic_error::operator=(const logic_error& le) _NOEXCEPT
125 __libcpp_nmstr *s1 = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
126 const __libcpp_nmstr *s2 = reinterpret_cast<const __libcpp_nmstr *>(&le.__imp_);
131 #if !defined(_LIBCPPABI_VERSION) && !defined(LIBSTDCXX)
133 logic_error::~logic_error() _NOEXCEPT
135 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
136 s->~__libcpp_nmstr();
140 logic_error::what() const _NOEXCEPT
142 const __libcpp_nmstr *s = reinterpret_cast<const __libcpp_nmstr *>(&__imp_);
148 runtime_error::runtime_error(const string& msg)
150 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
151 ::new(s) __libcpp_nmstr(msg.c_str());
154 runtime_error::runtime_error(const char* msg)
156 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
157 ::new(s) __libcpp_nmstr(msg);
160 runtime_error::runtime_error(const runtime_error& le) _NOEXCEPT
162 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
163 const __libcpp_nmstr *s2 = reinterpret_cast<const __libcpp_nmstr *>(&le.__imp_);
164 ::new(s) __libcpp_nmstr(*s2);
168 runtime_error::operator=(const runtime_error& le) _NOEXCEPT
170 __libcpp_nmstr *s1 = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
171 const __libcpp_nmstr *s2 = reinterpret_cast<const __libcpp_nmstr *>(&le.__imp_);
176 #if !defined(_LIBCPPABI_VERSION) && !defined(LIBSTDCXX)
178 runtime_error::~runtime_error() _NOEXCEPT
180 __libcpp_nmstr *s = reinterpret_cast<__libcpp_nmstr *>(&__imp_);
181 s->~__libcpp_nmstr();
185 runtime_error::what() const _NOEXCEPT
187 const __libcpp_nmstr *s = reinterpret_cast<const __libcpp_nmstr *>(&__imp_);
191 domain_error::~domain_error() _NOEXCEPT {}
192 invalid_argument::~invalid_argument() _NOEXCEPT {}
193 length_error::~length_error() _NOEXCEPT {}
194 out_of_range::~out_of_range() _NOEXCEPT {}
196 range_error::~range_error() _NOEXCEPT {}
197 overflow_error::~overflow_error() _NOEXCEPT {}
198 underflow_error::~underflow_error() _NOEXCEPT {}