EricWF created this revision.
`exception.cpp` is a bloody mess. It's full of confusing `#ifdef` branches for
each different ABI library we support, and it's getting unmaintainable.
This patch breaks down `exception.cpp` into multiple different header files,
roughly one per implementation.
https://reviews.llvm.org/D28785
Files:
src/exception.cpp
src/support/runtime/exception_fallback.ipp
src/support/runtime/exception_glibcxx.ipp
src/support/runtime/exception_libcxxabi.ipp
src/support/runtime/exception_libcxxrt.ipp
src/support/runtime/exception_msvc.ipp
src/support/runtime/exception_pointer_cxxabi.ipp
src/support/runtime/exception_pointer_glibcxx.ipp
src/support/runtime/exception_pointer_unimplemented.ipp
Index: src/support/runtime/exception_pointer_unimplemented.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_pointer_unimplemented.ipp
@@ -0,0 +1,80 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+namespace std {
+
+exception_ptr::~exception_ptr() _NOEXCEPT
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
+ : __ptr_(other.__ptr_)
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+}
+
+nested_exception::nested_exception() _NOEXCEPT
+ : __ptr_(current_exception())
+{
+}
+
+#if !defined(__GLIBCXX__)
+
+nested_exception::~nested_exception() _NOEXCEPT
+{
+}
+
+#endif
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+#if 0
+ if (__ptr_ == nullptr)
+ terminate();
+ rethrow_exception(__ptr_);
+#endif // FIXME
+}
+
+exception_ptr current_exception() _NOEXCEPT
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+# warning exception_ptr not yet implemented
+ fprintf(stderr, "exception_ptr not yet implemented\n");
+ ::abort();
+}
+
+} // namespace std
Index: src/support/runtime/exception_pointer_glibcxx.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_pointer_glibcxx.ipp
@@ -0,0 +1,74 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// libsupc++ does not implement the dependent EH ABI and the functionality
+// it uses to implement std::exception_ptr (which it declares as an alias of
+// std::__exception_ptr::exception_ptr) is not directly exported to clients. So
+// we have little choice but to hijack std::__exception_ptr::exception_ptr's
+// (which fortunately has the same layout as our std::exception_ptr) copy
+// constructor, assignment operator and destructor (which are part of its
+// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
+// function.
+
+namespace __exception_ptr
+{
+
+struct exception_ptr
+{
+ void* __ptr_;
+
+ exception_ptr(const exception_ptr&) _NOEXCEPT;
+ exception_ptr& operator=(const exception_ptr&) _NOEXCEPT;
+ ~exception_ptr() _NOEXCEPT;
+};
+
+}
+
+_LIBCPP_NORETURN void rethrow_exception(__exception_ptr::exception_ptr);
+
+exception_ptr::~exception_ptr() _NOEXCEPT
+{
+ reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr();
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
+ : __ptr_(other.__ptr_)
+{
+ new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr(
+ reinterpret_cast<const __exception_ptr::exception_ptr&>(other));
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
+{
+ *reinterpret_cast<__exception_ptr::exception_ptr*>(this) =
+ reinterpret_cast<const __exception_ptr::exception_ptr&>(other);
+ return *this;
+}
+
+nested_exception::nested_exception() _NOEXCEPT
+ : __ptr_(current_exception())
+{
+}
+
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+ if (__ptr_ == nullptr)
+ terminate();
+ rethrow_exception(__ptr_);
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+ rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p));
+}
Index: src/support/runtime/exception_pointer_cxxabi.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_pointer_cxxabi.ipp
@@ -0,0 +1,74 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef HAVE_DEPENDENT_EH_ABI
+#error this header may only be used with libc++abi or libcxxrt
+#endif
+
+namespace std {
+
+exception_ptr::~exception_ptr() _NOEXCEPT {
+ __cxa_decrement_exception_refcount(__ptr_);
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
+ : __ptr_(other.__ptr_)
+{
+ __cxa_increment_exception_refcount(__ptr_);
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
+{
+ if (__ptr_ != other.__ptr_)
+ {
+ __cxa_increment_exception_refcount(other.__ptr_);
+ __cxa_decrement_exception_refcount(__ptr_);
+ __ptr_ = other.__ptr_;
+ }
+ return *this;
+}
+
+nested_exception::nested_exception() _NOEXCEPT
+ : __ptr_(current_exception())
+{
+}
+
+nested_exception::~nested_exception() _NOEXCEPT
+{
+}
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+ if (__ptr_ == nullptr)
+ terminate();
+ rethrow_exception(__ptr_);
+}
+
+exception_ptr current_exception() _NOEXCEPT
+{
+ // be nicer if there was a constructor that took a ptr, then
+ // this whole function would be just:
+ // return exception_ptr(__cxa_current_primary_exception());
+ exception_ptr ptr;
+ ptr.__ptr_ = __cxa_current_primary_exception();
+ return ptr;
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+ __cxa_rethrow_primary_exception(p.__ptr_);
+ // if p.__ptr_ is NULL, above returns so we terminate
+ terminate();
+}
+
+} // namespace std
Index: src/support/runtime/exception_msvc.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_msvc.ipp
@@ -0,0 +1,75 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_ABI_MICROSOFT
+#error this header can only be used when targeting the MSVC ABI
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <eh.h>
+#include <corecrt_terminate.h>
+
+namespace std {
+
+// libcxxrt provides implementations of these functions itself.
+unexpected_handler
+set_unexpected(unexpected_handler func) _NOEXCEPT {
+ return ::set_unexpected(func);
+}
+
+unexpected_handler get_unexpected() _NOEXCEPT {
+ return ::_get_unexpected();
+}
+
+_LIBCPP_NORETURN
+void unexpected() {
+ (*get_unexpected())();
+ // unexpected handler should not return
+ terminate();
+}
+
+terminate_handler set_terminate(terminate_handler func) _NOEXCEPT {
+ return ::set_terminate(func);
+}
+
+terminate_handler get_terminate() _NOEXCEPT {
+ return ::_get_terminate();
+}
+
+_LIBCPP_NORETURN
+void terminate() _NOEXCEPT
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ (*get_terminate())();
+ // handler should not return
+ fprintf(stderr, "terminate_handler unexpectedly returned\n");
+ ::abort();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ // handler should not throw exception
+ fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
+ ::abort();
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() _NOEXCEPT {
+ return __uncaught_exceptions();
+}
+
+} // namespace std
Index: src/support/runtime/exception_libcxxrt.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_libcxxrt.ipp
@@ -0,0 +1,22 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+namespace std {
+
+bad_exception::~bad_exception() _NOEXCEPT
+{
+}
+
+const char* bad_exception::what() const _NOEXCEPT
+{
+ return "std::bad_exception";
+}
+
+} // namespace std
Index: src/support/runtime/exception_libcxxabi.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_libcxxabi.ipp
@@ -0,0 +1,28 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPPABI_VERSION
+#error this header can only be used with libc++abi
+#endif
+
+namespace std {
+
+bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() _NOEXCEPT
+{
+# if _LIBCPPABI_VERSION > 1101
+ return __cxa_uncaught_exceptions();
+# else
+ return __cxa_uncaught_exception() ? 1 : 0;
+# endif
+}
+
+} // namespace std
Index: src/support/runtime/exception_glibcxx.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_glibcxx.ipp
@@ -0,0 +1,17 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __GLIBCXX__
+#error header can only be used when targeting libstdc++ or libsupc++
+#endif
+
+namespace std {
+// Nothing TODO
+}
Index: src/support/runtime/exception_fallback.ipp
===================================================================
--- /dev/null
+++ src/support/runtime/exception_fallback.ipp
@@ -0,0 +1,107 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+namespace std {
+
+_LIBCPP_SAFE_STATIC static std::terminate_handler __terminate_handler;
+_LIBCPP_SAFE_STATIC static std::unexpected_handler __unexpected_handler;
+
+
+// libcxxrt provides implementations of these functions itself.
+unexpected_handler
+set_unexpected(unexpected_handler func) _NOEXCEPT
+{
+ return __sync_lock_test_and_set(&__unexpected_handler, func);
+}
+
+unexpected_handler
+get_unexpected() _NOEXCEPT
+{
+ return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0);
+
+}
+
+_LIBCPP_NORETURN
+void unexpected()
+{
+ (*get_unexpected())();
+ // unexpected handler should not return
+ terminate();
+}
+
+terminate_handler
+set_terminate(terminate_handler func) _NOEXCEPT
+{
+ return __sync_lock_test_and_set(&__terminate_handler, func);
+}
+
+terminate_handler
+get_terminate() _NOEXCEPT
+{
+ return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0);
+
+}
+
+#ifndef __EMSCRIPTEN__ // We provide this in JS
+_LIBCPP_NORETURN
+void
+terminate() _NOEXCEPT
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ (*get_terminate())();
+ // handler should not return
+ fprintf(stderr, "terminate_handler unexpectedly returned\n");
+ ::abort();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ // handler should not throw exception
+ fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
+ ::abort();
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+#endif // !__EMSCRIPTEN__
+
+#if !defined(__EMSCRIPTEN__)
+bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() _NOEXCEPT
+{
+#warning uncaught_exception not yet implemented
+ fprintf(stderr, "uncaught_exceptions not yet implemented\n");
+ ::abort();
+}
+#endif // !__EMSCRIPTEN__
+
+
+exception::~exception() _NOEXCEPT
+{
+}
+
+const char* exception::what() const _NOEXCEPT
+{
+ return "std::exception";
+}
+
+bad_exception::~bad_exception() _NOEXCEPT
+{
+}
+
+const char* bad_exception::what() const _NOEXCEPT
+{
+ return "std::bad_exception";
+}
+
+} // namespace std
Index: src/exception.cpp
===================================================================
--- src/exception.cpp
+++ src/exception.cpp
@@ -6,328 +6,30 @@
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
-#include <stdlib.h>
-#include <stdio.h>
#include "exception"
#include "new"
-#if defined(_LIBCPP_ABI_MICROSOFT)
-#include <eh.h>
-#include <corecrt_terminate.h>
-#elif defined(__APPLE__) && !defined(LIBCXXRT) && \
- !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
+#if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI) || \
+ (defined(__APPLE__) && !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY))
#include <cxxabi.h>
-
using namespace __cxxabiv1;
#define HAVE_DEPENDENT_EH_ABI 1
- #ifndef _LIBCPPABI_VERSION
- using namespace __cxxabiapple;
- // On Darwin, there are two STL shared libraries and a lower level ABI
- // shared library. The globals holding the current terminate handler and
- // current unexpected handler are in the ABI library.
- #define __terminate_handler __cxxabiapple::__cxa_terminate_handler
- #define __unexpected_handler __cxxabiapple::__cxa_unexpected_handler
- #endif // _LIBCPPABI_VERSION
-#elif defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
- #include <cxxabi.h>
- using namespace __cxxabiv1;
- #if defined(LIBCXXRT) || defined(_LIBCPPABI_VERSION)
- #define HAVE_DEPENDENT_EH_ABI 1
- #endif
-#elif !defined(__GLIBCXX__) // defined(LIBCXX_BUILDING_LIBCXXABI)
- _LIBCPP_SAFE_STATIC static std::terminate_handler __terminate_handler;
- _LIBCPP_SAFE_STATIC static std::unexpected_handler __unexpected_handler;
-#endif // defined(LIBCXX_BUILDING_LIBCXXABI)
-
-namespace std
-{
-
-#if !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__)
-
-// libcxxrt provides implementations of these functions itself.
-unexpected_handler
-set_unexpected(unexpected_handler func) _NOEXCEPT
-{
-#if defined(_LIBCPP_ABI_MICROSOFT)
- return ::set_unexpected(func);
-#else
- return __sync_lock_test_and_set(&__unexpected_handler, func);
-#endif
-}
-
-unexpected_handler
-get_unexpected() _NOEXCEPT
-{
-#if defined(_LIBCPP_ABI_MICROSOFT)
- return ::_get_unexpected();
-#else
- return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0);
-#endif
-}
-
-_LIBCPP_NORETURN
-void
-unexpected()
-{
- (*get_unexpected())();
- // unexpected handler should not return
- terminate();
-}
-
-terminate_handler
-set_terminate(terminate_handler func) _NOEXCEPT
-{
-#if defined(_LIBCPP_ABI_MICROSOFT)
- return ::set_terminate(func);
-#else
- return __sync_lock_test_and_set(&__terminate_handler, func);
#endif
-}
-terminate_handler
-get_terminate() _NOEXCEPT
-{
#if defined(_LIBCPP_ABI_MICROSOFT)
- return ::_get_terminate();
-#else
- return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0);
-#endif
-}
-
-#ifndef __EMSCRIPTEN__ // We provide this in JS
-_LIBCPP_NORETURN
-void
-terminate() _NOEXCEPT
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- try
- {
-#endif // _LIBCPP_NO_EXCEPTIONS
- (*get_terminate())();
- // handler should not return
- fprintf(stderr, "terminate_handler unexpectedly returned\n");
- ::abort();
-#ifndef _LIBCPP_NO_EXCEPTIONS
- }
- catch (...)
- {
- // handler should not throw exception
- fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
- ::abort();
- }
-#endif // _LIBCPP_NO_EXCEPTIONS
-}
-#endif // !__EMSCRIPTEN__
-#endif // !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION)
-
-#if !defined(LIBCXXRT) && !defined(__GLIBCXX__) && !defined(__EMSCRIPTEN__)
-
-bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
-
-int uncaught_exceptions() _NOEXCEPT
-{
-#if !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) && \
- (defined(__APPLE__) || defined(_LIBCPPABI_VERSION))
- // on Darwin, there is a helper function so __cxa_get_globals is private
-# if _LIBCPPABI_VERSION > 1101
- return __cxa_uncaught_exceptions();
-# else
- return __cxa_uncaught_exception() ? 1 : 0;
-# endif
-#elif defined(_LIBCPP_ABI_MICROSOFT)
- return __uncaught_exceptions();
-#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING("uncaught_exceptions not yet implemented")
-# else
-# warning uncaught_exception not yet implemented
-# endif
- fprintf(stderr, "uncaught_exceptions not yet implemented\n");
- ::abort();
-#endif // __APPLE__
-}
-
-
-#ifndef _LIBCPPABI_VERSION
-
-exception::~exception() _NOEXCEPT
-{
-}
-
-const char* exception::what() const _NOEXCEPT
-{
- return "std::exception";
-}
-
-#endif // _LIBCPPABI_VERSION
-#endif //LIBCXXRT
-#if !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__)
-
-bad_exception::~bad_exception() _NOEXCEPT
-{
-}
-
-const char* bad_exception::what() const _NOEXCEPT
-{
- return "std::bad_exception";
-}
-
-#endif
-
-#if defined(__GLIBCXX__)
-
-// libsupc++ does not implement the dependent EH ABI and the functionality
-// it uses to implement std::exception_ptr (which it declares as an alias of
-// std::__exception_ptr::exception_ptr) is not directly exported to clients. So
-// we have little choice but to hijack std::__exception_ptr::exception_ptr's
-// (which fortunately has the same layout as our std::exception_ptr) copy
-// constructor, assignment operator and destructor (which are part of its
-// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
-// function.
-
-namespace __exception_ptr
-{
-
-struct exception_ptr
-{
- void* __ptr_;
-
- exception_ptr(const exception_ptr&) _NOEXCEPT;
- exception_ptr& operator=(const exception_ptr&) _NOEXCEPT;
- ~exception_ptr() _NOEXCEPT;
-};
-
-}
-
-_LIBCPP_NORETURN void rethrow_exception(__exception_ptr::exception_ptr);
-
-#endif
-
-exception_ptr::~exception_ptr() _NOEXCEPT
-{
-#if HAVE_DEPENDENT_EH_ABI
- __cxa_decrement_exception_refcount(__ptr_);
-#elif defined(__GLIBCXX__)
- reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr();
-#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING("exception_ptr not yet implemented")
-# else
-# warning exception_ptr not yet implemented
-# endif
- fprintf(stderr, "exception_ptr not yet implemented\n");
- ::abort();
-#endif
-}
-
-exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
- : __ptr_(other.__ptr_)
-{
-#if HAVE_DEPENDENT_EH_ABI
- __cxa_increment_exception_refcount(__ptr_);
-#elif defined(__GLIBCXX__)
- new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr(
- reinterpret_cast<const __exception_ptr::exception_ptr&>(other));
-#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING("exception_ptr not yet implemented")
-# else
-# warning exception_ptr not yet implemented
-# endif
- fprintf(stderr, "exception_ptr not yet implemented\n");
- ::abort();
-#endif
-}
-
-exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
-{
-#if HAVE_DEPENDENT_EH_ABI
- if (__ptr_ != other.__ptr_)
- {
- __cxa_increment_exception_refcount(other.__ptr_);
- __cxa_decrement_exception_refcount(__ptr_);
- __ptr_ = other.__ptr_;
- }
- return *this;
-#elif defined(__GLIBCXX__)
- *reinterpret_cast<__exception_ptr::exception_ptr*>(this) =
- reinterpret_cast<const __exception_ptr::exception_ptr&>(other);
- return *this;
-#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING("exception_ptr not yet implemented")
-# else
-# warning exception_ptr not yet implemented
-# endif
- fprintf(stderr, "exception_ptr not yet implemented\n");
- ::abort();
-#endif
-}
-
-nested_exception::nested_exception() _NOEXCEPT
- : __ptr_(current_exception())
-{
-}
-
-#if !defined(__GLIBCXX__)
-
-nested_exception::~nested_exception() _NOEXCEPT
-{
-}
-
-#endif
-
-_LIBCPP_NORETURN
-void
-nested_exception::rethrow_nested() const
-{
- if (__ptr_ == nullptr)
- terminate();
- rethrow_exception(__ptr_);
-}
-
-#if !defined(__GLIBCXX__)
-
-exception_ptr current_exception() _NOEXCEPT
-{
-#if HAVE_DEPENDENT_EH_ABI
- // be nicer if there was a constructor that took a ptr, then
- // this whole function would be just:
- // return exception_ptr(__cxa_current_primary_exception());
- exception_ptr ptr;
- ptr.__ptr_ = __cxa_current_primary_exception();
- return ptr;
-#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING( "exception_ptr not yet implemented" )
-# else
-# warning exception_ptr not yet implemented
-# endif
- fprintf(stderr, "exception_ptr not yet implemented\n");
- ::abort();
-#endif
-}
-
-#endif // !__GLIBCXX__
-
-_LIBCPP_NORETURN
-void rethrow_exception(exception_ptr p)
-{
-#if HAVE_DEPENDENT_EH_ABI
- __cxa_rethrow_primary_exception(p.__ptr_);
- // if p.__ptr_ is NULL, above returns so we terminate
- terminate();
+#include "support/runtime/exception_msvc.ipp"
+#include "support/runtime/exception_pointer_unimplemented.ipp"
+#elif defined(_LIBCPPABI_VERSION)
+#include "support/runtime/exception_libcxxabi.ipp"
+#include "support/runtime/exception_pointer_cxxabi.ipp"
+#elif defined(LIBCXXRT)
+#include "support/runtime/exception_libcxxrt.ipp"
+#include "support/runtime/exception_pointer_cxxabi.ipp"
#elif defined(__GLIBCXX__)
- rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p));
+#include "support/runtime/exception_glibcxx.ipp"
+#include "support/runtime/exception_pointer_glibcxx.ipp"
#else
-# if defined(_MSC_VER) && ! defined(__clang__)
- _LIBCPP_WARNING("exception_ptr not yet implemented")
-# else
-# warning exception_ptr not yet implemented
-# endif
- fprintf(stderr, "exception_ptr not yet implemented\n");
- ::abort();
+#include "support/runtime/exception_fallback.ipp"
+#include "support/runtime/exception_pointer_unimplemented.ipp"
#endif
-}
-} // std
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