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36 Commits

Author SHA1 Message Date
Jakub Jelinek
99dee82307 Update copyright years. 2021-01-04 10:26:59 +01:00
Jonathan Wakely
710508c7b1 libstdc++: Fix multiple definitions of std::exception_ptr functions [PR 97729] 
This fixes some multiple definition errors caused by the changes for
PR libstdc++/90295. The previous solution for inlining the members of
std::exception_ptr but still exporting them from the library was to
suppress the 'inline' keyword on those functions when compiling
libsupc++/eh_ptr.cc, so they get defined in that file. That produces ODR
violations though, because there are now both inline and non-inline
definitions in the library, due to the use of std::exception_ptr in
other files sucg as src/c++11/future.cc.

The new solution is to define all the relevant members as 'inline'
unconditionally, but use __attribute__((used)) to cause definitions to
be emitted in libsupc++/eh_ptr.cc as before. This doesn't quite work
however, because PR c++/67453 means the attribute is ignored on
constructors and destructors. As a workaround, the old solution
(conditionally inline) is still used for those members, but they are
given the always_inline attribute so that they aren't emitted in
src/c++11/future.o as inline definitions.

libstdc++-v3/ChangeLog:

	PR libstdc++/97729
	* include/std/future (__basic_future::_M_get_result): Use
	nullptr for null pointer constant.
	* libsupc++/eh_ptr.cc (operator==, operator!=): Remove
	definitions.
	* libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Define
	macro to conditionally add __attribute__((__used__)).
	(operator==, operator!=, exception_ptr::exception_ptr())
	(exception_ptr::exception_ptr(const exception_ptr&))
	(exception_ptr::~exception_ptr())
	(exception_ptr::operator=(const exception_ptr&))
	(exception_ptr::swap(exception_ptr&)): Always define as
	inline. Add macro to be conditionally "used".
 2020-11-05 18:01:25 +00:00
Jonathan Wakely
1352ea1925 libstdc++: Inline std::exception_ptr members [PR 90295] 
This inlines most members of std::exception_ptr so that all operations
on a null exception_ptr can be optimized away. This benefits code like
std::future and coroutines where an exception_ptr object is present to
cope with exceptional cases, but is usually not used and remains null.

Since those functions were previously non-inline we have to continue to
export them from the library, for objects that were compiled against the
old headers and expect to find definitions in the library.

In order to inline the copy constructor and destructor we need to export
the _M_addref() and _M_release() members that increment/decrement the
reference count when copying/destroying a non-null exception_ptr. The
copy ctor and dtor check for null and don't call _M_addref and
_M_release unless they need to. The checks for null pointers in
_M_addref and _M_release are still needed because old code might call
them without checking for null first. But we can use __builtin_expect to
predict that they are usually called for the non-null case.

libstdc++-v3/ChangeLog:

	PR libstdc++/90295
	* config/abi/pre/gnu.ver (CXXABI_1.3.13): New symbol version.
	(exception_ptr::_M_addref(), exception_ptr::_M_release()):
	Export symbols.
	* libsupc++/eh_ptr.cc (exception_ptr::exception_ptr()):
	Remove out-of-line definition.
	(exception_ptr::exception_ptr(const exception_ptr&)):
	Likewise.
	(exception_ptr::~exception_ptr()): Likewise.
	(exception_ptr::operator=(const exception_ptr&)):
	Likewise.
	(exception_ptr::swap(exception_ptr&)): Likewise.
	(exception_ptr::_M_addref()): Add branch prediction.
	* libsupc++/exception_ptr.h (exception_ptr::operator bool):
	Add noexcept.
	[!_GLIBCXX_EH_PTR_COMPAT] (operator==, operator!=): Define
	inline as hidden friends. Remove declarations at namespace
	scope.
	(exception_ptr::exception_ptr()): Define inline.
	(exception_ptr::exception_ptr(const exception_ptr&)):
	Likewise.
	(exception_ptr::~exception_ptr()): Likewise.
	(exception_ptr::operator=(const exception_ptr&)):
	Likewise.
	(exception_ptr::swap(exception_ptr&)): Likewise.
	* testsuite/util/testsuite_abi.cc: Add CXXABI_1.3.13.
	* testsuite/18_support/exception_ptr/90295.cc: New test.
 2020-10-06 17:24:16 +01:00
Jakub Jelinek
8d9254fc8a Update copyright years. 
From-SVN: r279813
 2020-01-01 12:51:42 +01:00
Jakub Jelinek
a554497024 Update copyright years. 
From-SVN: r267494
 2019-01-01 13:31:55 +01:00
Jakub Jelinek
85ec4feb11 Update copyright years. 
From-SVN: r256169
 2018-01-03 11:03:58 +01:00
Pauli Nieminen
ed3cb49703 Support exception propagation without lock-free atomic int 
2017-01-04  Pauli Nieminen  <suokkos@gmail.com>
	    Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/64735
	* acinclude.m4 (GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER): Define.
	* config.h.in: Regenerate.
	* config/abi/pre/gnu.ver [HAVE_EXCEPTION_PTR_SINCE_GCC46]
	(GLIBCXX_3.4.15, GLIBCXX_3.4.21, CXXABI_1.3.3, CXXABI_1.3.5): Make
	exports for exception_ptr, nested_exception, and future conditional.
	[HAVE_EXCEPTION_PTR_SINCE_GCC46] (GLIBCXX_3.4.23, CXXABI_1.3.11): Add
	exports for exception_ptr, nested_exception, and future conditional.
	* configure: Regenerate.
	* configure.ac: Use GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER.
	* include/std/future: Remove check for ATOMIC_INT_LOCK_FREE
	* libsupc++/eh_atomics.h: New file for internal use only.
	(__eh_atomic_inc, __eh_atomic_dec): New.
	* libsupc++/eh_ptr.cc (exception_ptr::_M_addref)
	(exception_ptr::_M_release) (__gxx_dependent_exception_cleanup)
	(rethrow_exception): Use eh_atomics.h reference counting helpers.
	* libsupc++/eh_throw.cc (__gxx_exception_cleanup): Likewise.
	* libsupc++/eh_tm.cc (free_any_cxa_exception): Likewise.
	* libsupc++/exception: Remove check for ATOMIC_INT_LOCK_FREE.
	* libsupc++/exception_ptr.h: Likewise.
	* libsupc++/guard.cc: Include header for ATOMIC_INT_LOCK_FREE macro.
	* libsupc++/nested_exception.cc: Remove check for
	ATOMIC_INT_LOCK_FREE.
	* libsupc++/nested_exception.h: Likewise.
	* src/c++11/future.cc: Likewise.
	* testsuite/18_support/exception_ptr/*: Remove atomic builtins checks.
	* testsuite/18_support/nested_exception/*: Likewise.
	* testsuite/30_threads/async/*: Likewise.
	* testsuite/30_threads/future/*: Likewise.
	* testsuite/30_threads/headers/future/types_std_c++0x.cc: Likewise.
	* testsuite/30_threads/packaged_task/*: Likewise.
	* testsuite/30_threads/promise/*: Likewise.
	* testsuite/30_threads/shared_future/*: Likewise.

Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>

From-SVN: r244051
 2017-01-04 10:54:59 +00:00
Jakub Jelinek
cbe34bb5ed Update copyright years. 
From-SVN: r243994
 2017-01-01 13:07:43 +01:00
Jonathan Wakely
a3dbb63597 Use noexcept instead of _GLIBCXX_USE_NOEXCEPT 
* libsupc++/eh_ptr.cc (exception_ptr): Replace _GLIBCXX_USE_NOEXCEPT
	with noexcept.

From-SVN: r240943
 2016-10-10 19:32:40 +01:00
Jakub Jelinek
818ab71a41 Update copyright years. 
From-SVN: r232055
 2016-01-04 15:30:50 +01:00
Eric Botcazou
9b92a9f3b6 sjlj.m4: New file. 
config/
	* sjlj.m4: New file.
libgcc/
	* configure.ac: Include config/sjlj.m4.
	Remove manual SJLJ check, add GCC_CHECK_SJLJ_EXCEPTIONS and adjust.
	* config.in: Regenerate.
	* configure: Likewise.
	* config.host: Replace enable_sjlj_exceptions by ac_cv_sjlj_exceptions.
libjava/
	* configure.ac: Include config/sjlj.m4.
	Remove manual SJLJ check, add GCC_CHECK_SJLJ_EXCEPTIONS and adjust.
	* include/config.h.in: Regenerate.
	* configure: Likewise.
	* exception.cc: Replace SJLJ_EXCEPTIONS by __USING_SJLJ_EXCEPTIONS__.
	* stacktrace.cc: Likewise.
	* include/default-signal.h: Likewise.
	* sysdep/i386/backtrace.h: Likewise.
libobjc/
	* configure.ac: Remove manual SJLJ check.
	* config.h.in: Regenerate.
	* configure: Likewise.
	* exception.c: Replace SJLJ_EXCEPTIONS by __USING_SJLJ_EXCEPTIONS__.
libstdc++-v3/
	* acinclude.m4 (GLIBCXX_ENABLE_SJLJ_EXCEPTIONS): Delete.
	* configure.ac: Remove GLIBCXX_ENABLE_SJLJ_EXCEPTIONS.
	* config.h.in: Regenerate.
	* configure: Likewise.
	* libsupc++/eh_personality.cc: Replace _GLIBCXX_SJLJ_EXCEPTIONS by
	__USING_SJLJ_EXCEPTIONS__.
	* libsupc++/eh_throw.cc: Likewise.
	* libsupc++/eh_ptr.cc: Likewise.
	* doc/html/manual/appendix_porting.html: Remove
	GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
	* doc/xml/manual/build_hacking.xml: Likewise.
	* doc/html/manual/configure.html: Remove --enable-sjlj-exceptions.
	* doc/xml/manual/configure.xml: Likewise.

From-SVN: r223181
 2015-05-13 21:15:31 +00:00
Dmitry Prokoptsev
f5eedc3915 re PR libstdc++/62258 (uncaught_exception() equals to `true' after rethrow_exception()) 
2015-04-27  Dmitry Prokoptsev  <dprokoptsev@gmail.com>
	    Michael Hanselmann  <public@hansmi.ch>

	PR libstdc++/62258
	* libsupc++/eh_ptr.cc (rethrow_exception): Increment count of
	uncaught exceptions.
	* testsuite/18_support/exception_ptr/62258.cc: New.

Co-Authored-By: Michael Hanselmann <public@hansmi.ch>

From-SVN: r222480
 2015-04-27 20:44:30 +01:00
Jakub Jelinek
5624e564d2 Update copyright years. 
From-SVN: r219188
 2015-01-05 13:33:28 +01:00
Jonathan Wakely
0812493fc5 * libsupc++/eh_ptr.cc: Improve static_assert messages. 
From-SVN: r208965
 2014-03-31 19:16:14 +01:00
Jonathan Wakely
3941b26033 re PR libstdc++/60612 (Throwing exception, catching and rethrowing (std::exception_ptr) in destructor leads to segfault) 
PR libstdc++/60612
	* libsupc++/eh_ptr.cc: Assert __cxa_dependent_exception layout is
	compatible with __cxa_exception.
	* libsupc++/unwind-cxx.h (__cxa_dependent_exception): Add padding.
	Fix typos in comments.
	* testsuite/18_support/exception_ptr/60612-terminate.cc: New.
	* testsuite/18_support/exception_ptr/60612-unexpected.cc: New.

From-SVN: r208871
 2014-03-27 18:07:25 +00:00
Richard Sandiford
aa118a03c4 Update copyright years in libstdc++-v3/ 
From-SVN: r206301
 2014-01-02 22:30:10 +00:00
Jonathan Wakely
7e20f4b022 re PR libstdc++/56841 (ld: Unsatisfied symbol "__atomic_exchange_8" in file /test/gnu/gcc/objdir/prev-hppa64-hp-hpux11.11/libstdc++-v3/src/.libs/libstdc++.a[eh_terminate.o]) 
PR libstdc++/56841
	* libsupc++/eh_ptr.cc (rethrow_exception): Use get_unexpected() and
	get_terminate() accessors.
	* libsupc++/eh_throw.cc (__cxa_throw): Likewise.
	* libsupc++/eh_terminate.cc: Use mutex when atomic builtins not
	available.
	* libsupc++/new_handler.cc: Likewise.

From-SVN: r197512
 2013-04-05 11:03:04 +01:00
Richard Sandiford
405feeb871 Update copyright in libstdc++-v3. 
From-SVN: r195701
 2013-02-03 17:54:05 +00:00
Benjamin Kosnik
75cee7c62a PR libstdc++/51798 continued. 
2012-02-10  Benjamin Kosnik  <bkoz@redhat.com>
            Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/51798 continued.
	* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Use __atomic_*
	builtins instead of __sync_* builtins for atomic functionality.
	* include/bits/shared_ptr_base.h: Same.
	* include/parallel/compatibility.h: Same.
	* include/profile/impl/profiler_state.h: Same.
	* include/tr1/shared_ptr.h: Same.
	* libsupc++/eh_ptr.cc: Same.
	* libsupc++/eh_throw.cc: Same.
	* libsupc++/eh_tm.cc: Same.
	* libsupc++/guard.cc: Same.
	* configure: Regenerated.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust line numbers.

Co-Authored-By: Jonathan Wakely <jwakely.gcc@gmail.com>

From-SVN: r184110
 2012-02-10 18:20:43 +00:00
Paolo Carlini
8535715d0f re PR libstdc++/51438 (std::exception and derived classes are not compatible with std::nested_exception and C++11 in general) 
2011-12-06  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/51438
	* libsupc++/nested_exception.h (nested_exception::~nested_exception):
	Declare noexcept.
	* libsupc++/nested_exception.cc: Adjust.
	* testsuite/18_support/nested_exception/51438.cc: New.
	* testsuite/18_support/nested_exception/throw_with_nested.cc: Adjust.
	* testsuite/18_support/nested_exception/rethrow_if_nested.cc:
	Likewise.

	* src/shared_ptr.cc: Use noexcept where appropriate.
	* include/std/system_error: Likewise.
	* include/std/functional: Likewise.
	* include/bits/shared_ptr_base.h: Likewise.
	* src/stdexcept.cc: Use _GLIBCXX_USE_NOEXCEPT where appropriate.
	* include/std/stdexcept: Likewise.
	* libsupc++/bad_cast.cc: Likewise.
	* libsupc++/bad_typeid.cc: Likewise.
	* libsupc++/eh_exception.cc: Likewise.
	* libsupc++/typeinfo: Likewise.
	* libsupc++/exception: Likewise.
	* libsupc++/eh_ptr.cc: Likewise.
	* libsupc++/bad_alloc.cc: Likewise.
	* libsupc++/exception_ptr.h: Likewise.

	* include/std/chrono: Use noexcept where appropriate.
	* src/chrono.cc: Likewise.

From-SVN: r182064
 2011-12-06 20:03:25 +00:00
Benjamin Kosnik
a152e96f01 acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Remove size-specific macros. 
2011-11-30  Benjamin Kosnik  <bkoz@redhat.com>

        * acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Remove
        size-specific macros. _GLIBCXX_ATOMIC_BUILTINS_1,
        _GLIBCXX_ATOMIC_BUILTINS_2, _GLIBCXX_ATOMIC_BUILTINS_4,
        _GLIBCXX_ATOMIC_BUILTINS_8. Use _GLIBCXX_ATOMIC_BUILTINS to
        indicate use of C++11 atomic builtins.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * include/Makefile.am (bits_sup_headers): Add atomic_lockfree_defines.h.
        * include/Makefile.in: Regenerate.
        * libsupc++/Makefile.am: Compile C++11 support with -std=gnu++0x.
        * libsupc++/Makefile.in: Regenerate.

        * include/bits/atomic_base.h: Move lock-free property macros...
        * libsupc++/atomic_lockfree_defines.h: ...here.
        * include/std/future: Use C++11 macros.
        * libsupc++/eh_ptr.cc: Same.
        * libsupc++/eh_throw.cc: Same.
        * libsupc++/exception: Same.
        * libsupc++/exception_ptr.h: Same.
        * libsupc++/guard.cc: Same.
        * libsupc++/nested_exception.cc: Same.
        * libsupc++/nested_exception.h: Same.
        * src/future.cc: Same.

        * include/ext/atomicity.h: Use _GLIBCXX_ATOMIC_BUILTINS.

        * doc/doxygen/user.cfg.in
        * doc/xml/manual/concurrency_extensions.xml

        * testsuite/18_support/exception_ptr/lifespan.cc
        * testsuite/lib/libstdc++.exp

From-SVN: r181869
 2011-12-01 02:20:32 +00:00
Benjamin Kosnik
7c3e9502c3 re PR libstdc++/36104 (gnu-versioned-namespace is broken) 
2011-01-14  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/36104
	* include/Makefile.am (bits_sup_headers, stamp-bits-sup): New.
	* include/Makefile.in: Regenerate.
	* libsupc++/Makefile.am (std_HEADERS, bits_HEADERS): New.
	(install-stdHEADERS, install-bitsHEADERS): New.
	* libsupc++/Makefile.in: Regenerate.

	* include/bits/c++config: Update for inline namespaces.
	* libsupc++/cxxabi-forced.h: To...
	* libsupc++/cxxabi_forced.h: ...this.
	* libsupc++/hash_bytes.h: Separate file.
	* libsupc++/typeinfo: Use it.
	* libsupc++/exception: Adjust for bits subdirectory.
	* libsupc++/eh_aux_runtime.cc: Same.
	* libsupc++/eh_ptr.cc: Same.
	* libsupc++/new_op.cc: Same.
	* libsupc++/exception_defines.h: Same.
	* libsupc++/nested_exception.h: Same.
	* libsupc++/eh_terminate.cc: Same.
	* libsupc++/vec.cc: Same.
	* libsupc++/vterminate.cc: Same.
	* libsupc++/exception_ptr.h: Same.
	* libsupc++/eh_personality.cc: Same.
	* libsupc++/eh_call.cc: Same.
	* libsupc++/new_opnt.cc: Same.
	* libsupc++/hash_bytes.cc: Same.
	* config/cpu/arm/cxxabi_tweaks.h: Same.
	* config/cpu/generic/cxxabi_tweaks.h: Same.
	* libsupc++/cxxabi.h: Same. Consolidate _GLIBCXX_NOTHROW defines.
	* include/std/bitset: Same.
	* include/ext/vstring.tcc: Same.
	* include/bits/hashtable.h: Same.
	* include/bits/functional_hash.h: Same.
	* include/bits/hashtable_policy.h: Same.
	* include/bits/basic_string.h: Same.
	* include/bits/istream.tcc: Same.
	* include/bits/ostream.tcc: Same.
	* include/bits/algorithmfwd.h: Same.
	* include/bits/basic_string.tcc: Same.
	* include/bits/ostream_insert.h: Same.
	* include/bits/fstream.tcc: Same.
	* include/bits/functexcept.h: Same.

	* doc/doxygen/user.cfg.in: Adjust names.

	* testsuite/ext/profile/mutex_extensions_neg.cc: Adjust line numbers.

From-SVN: r168831
 2011-01-15 00:27:10 +00:00
Jakub Jelinek
d652f226fc Update Copyright years for files modified in 2010. 
From-SVN: r168438
 2011-01-03 21:52:22 +01:00
Jonathan Wakely
b4e77f9b76 re PR libstdc++/40296 ([C++0x] std::exception_ptr comparisons) 
2010-06-06  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/40296
	* libsupc++/exception_ptr.h (exception_ptr::exception_ptr): Replace
	__safe_bool constructor with nullptr_t constructor in C++0x mode.
	(exception_ptr::operator bool): Add explicit conversion to bool.
	(swap(exception_ptr&, exception_ptr&)): Add.
	(exception_ptr::_M_safe_bool_dummy): Only declare for old ABI.
	* libsupc++/eh_ptr.cc (exception_ptr::_M_safe_bool_dummy): Move
	next to other functions retained for ABI compatibility.
	* testsuite/18_support/exception_ptr/requirements.cc: New.
	* testsuite/18_support/exception_ptr/requirements_neg.cc: New.

From-SVN: r160340
 2010-06-06 14:27:23 +01:00
Benjamin Kosnik
8eead16e5e user.cfg.in: Regenerate, add files. 
2009-11-09  Benjamin Kosnik  <bkoz@redhat.com>

	* doc/doxygen/user.cfg.in: Regenerate, add files.
	* libsupc++/eh_ptr.cc: Format.
	* libsupc++/exception_ptr.h: Same.
	* libsupc++/cxxabi.h(recursive_init_error): Move declaration here.
	* libsupc++/guard.cc: From here.
	* libsupc++/nested_exception.h: Add markup.

From-SVN: r154054
 2009-11-09 22:09:30 +00:00
Paolo Carlini
110a123aae re PR libstdc++/40296 ([C++0x] std::exception_ptr comparisons) 
2009-06-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/40296
	* libsupc++/exception_ptr.h (exception_ptr::operator!,
	exception_ptr::operator __safe_bool): Only declare when
	_GLIBCXX_EH_PTR_COMPAT is undefined.
	* libsupc++/eh_ptr.cc: Define _GLIBCXX_EH_PTR_COMPAT before including
	exception_ptr.
	* testsuite/18_support/exception_ptr/40296.cc: New.
	* testsuite/18_support/nested_exception/throw_with_nested.cc: Adjust.
	* testsuite/18_support/nested_exception/cons.cc: Likewise.
	* testsuite/18_support/nested_exception/nested_ptr.cc: Likewise.
	* testsuite/18_support/exception_ptr/current_exception.cc: Likewise.

From-SVN: r148122
 2009-06-03 10:37:20 +00:00
Jan Hubicka
5cf217fff1 * eh_type.cc (__cxa_current_exception_type) Mark throw(). 
* unwind-cxx.h (__cxa_get_globals, __cxa_get_globals_fast): Mark const.
	(__cxa_get_exception_ptr): Mark pure.
	(__cxa_bad_cast, __cxa_bad_typeid): Mark noreturn
	(__terminate): Makr throw ().
	* exception (terminate): Mark throw().
	(uncaught_exception): Mark pure.
	* eh_ptr.cc (_M_safe_bool_dummy): Mark throw().
	* guard.cc (__cxa_guard_abort, __cxa_guard_release): Mark throw().
	* eh_terminate.cc (__terminate, terminate): Mark throw().
	* vec.cc (__cxa_vec_cleanup): Mark throw().
	* cxxabi.h (__cxa_vec_cleanup, __cxa_guard_release, __cxa_guard_abort): Mark throw ().
	(__cxa_pure_virtual): Mark noreturn.
	(__cxa_current_exception_type): Mark throw and pure.
	* exception_ptr.h (operator ==, !=, _M_get, !, ==,
	__cxa_exception_type): Mark pure.
	(_M_safe_bool_dummy): Mark pure and const.

From-SVN: r146331
 2009-04-18 22:18:21 +00:00
Jakub Jelinek
748086b7b2 Licensing changes to GPLv3 resp. GPLv3 with GCC Runtime Exception. 
From-SVN: r145841
 2009-04-09 17:00:19 +02:00
Jakub Jelinek
c4bca01b27 re PR libstdc++/38732 (Openoffice.org segfaults with runtime libs built from GCC trunk) 
PR libstdc++/38732
	* libsupc++/unwind-cxx.h (__cxxabiv1::__cxa_exception): Remove
	referenceCount field again.
	(__cxxabiv1::__cxa_refcounted_exception): New struct.
	(__cxxabiv1::__get_refcounted_exception_header_from_obj,
	__cxxabiv1::__get_refcounted_exception_header_from_ue): New static
	inline functions.
	* libsupc++/eh_alloc.cc (__cxxabiv1::__cxa_allocate_exception,
	__cxxabiv1::__cxa_free_exception): Use __cxa_refcounted_exception
	instead of __cxa_exception.
	* libsupc++/eh_throw.cc (__gxx_exception_cleanup,
	__cxxabiv1::__cxa_throw): Likewise.
	* libsupc++/eh_ptr.cc (std::rethrow_exception,
	std::__exception_ptr::exception_ptr::_M_addref,
	std::__exception_ptr::exception_ptr::_M_release,
	__gxx_dependent_exception_cleanup): Likewise.
	* testsuite/18_support/exception/38732.cc: New test.

From-SVN: r143170
 2009-01-07 23:50:42 +01:00
Paolo Carlini
30a333ceeb [multiple changes] 
2008-08-23  Paolo Carlini  <paolo.carlini@oracle.com>

	* testsuite/lib/libstdc++.exp (check_v3_target_atomic_builtins): Add.
	* testsuite/lib/dg-options.exp (dg-require-atomic-builtins): Likewise.
	* testsuite/18_support/exception_ptr/current_exception.cc: Use it.
        * testsuite/18_support/exception_ptr/rethrow_exception.cc: Likewise.
        * testsuite/18_support/exception_ptr/lifespan.cc: Likewise.

2008-08-23  Sebastian Redl <sebastian.redl@getdesigned.at>

	Add (again) exception propagation support as per N2179.  Feature is
	available only when _GLIBCXX_ATOMIC_BUILTINS_4 is defined.
	* libsupc++/exception_ptr.h (exception_ptr, current_exception,
        copy_exception, rethrow_exception): New file, implement exception
	propagation.
        * libsupc++/eh_ptr.cc (exception_ptr, current_exception,
        rethrow_exception, __gxx_dependent_exception_cleanup): Likewise.
        * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count.
	(__cxa_dependent_exception, __cxa_allocate_dependent_exception,
        __cxa_free_dependent_exception, __get_dependent_exception_from_ue,
        __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception,
        __gxx_dependent_exception_class, __get_object_from_ue,
        __get_object_from_ambiguous_exception): Add.
        (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename.
        (__is_gxx_exception_class): Handle dependent exceptions.
        * libsupc++/eh_arm.cc (__cxa_type_match): Likewise.
        * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise.
        * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise.
        * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise.
        * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception,
        __cxa_free_dependent_exception): Add.
        * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference
        counting.
        * libsupc++/exception: Conditionally include exception_ptr.h.
        * libsupc++/Makefile.am: Register new files.
        * libsupc++/Makefile.in: Regenerate.
        * config/abi/pre/gnu.ver: Add new symbols.
        * testsuite/18_support/exception_ptr/current_exception.cc: Test the
        core functionality of current_exception().
        * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the
        core functionality of rethrow_exception().
        * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of
        exception objects during exception propagation.

From-SVN: r139509
 2008-08-23 11:28:30 +00:00
Paolo Carlini
9b410dd0ec 2008-08-22 Paolo Carlini <paolo.carlini@oracle.com> 
Revert again the N2179 patch.

From-SVN: r139497
 2008-08-22 18:59:41 +00:00
Sebastian Redl
eb5712c966 eh_ptr.cc (__gxx_dependent_exception_cleanup): Call __cxa_free_dependent_exception. 
2008-08-21  Sebastian Redl <sebastian.redl@getdesigned.at>

	* libsupc++/eh_ptr.cc (__gxx_dependent_exception_cleanup): Call
	__cxa_free_dependent_exception.

From-SVN: r139402
 2008-08-21 17:37:23 +00:00
Paolo Carlini
6d419a6ef3 Re-instate last patch... 
2008-08-13  Paolo Carlini  <paolo.carlini@oracle.com>

	Re-instate last patch, amended to use __exchange_and_add_dispatch
	and __atomic_add_dispatch in eh_ptr.cc and eh_throw.cc.

From-SVN: r139091
 2008-08-14 01:17:09 +00:00
Paolo Carlini
8d019b6593 2008-08-13 Paolo Carlini <paolo.carlini@oracle.com> 
Revert the last patch.

From-SVN: r139075
 2008-08-13 20:10:42 +00:00
Paolo Carlini
ec001bc928 2008-08-13 Paolo Carlini <paolo.carlini@oracle.com> 
Revert the last patch.

From-SVN: r139074
 2008-08-13 20:08:55 +00:00
Sebastian Redl
0292e6d2bb Add exception propagation support as per N2179. 
2008-08-13  Sebastian Redl <sebastian.redl@getdesigned.at>

	Add exception propagation support as per N2179.
        * libsupc++/exception_ptr.h (exception_ptr, current_exception,
        copy_exception, rethrow_exception): New file, implement exception
	propagation.
        * libsupc++/eh_ptr.cc (exception_ptr, current_exception,
        rethrow_exception, __gxx_dependent_exception_cleanup): Likewise.
        * libsupc++/unwind-cxx.h (__cxa_exception): Add reference count.
	(__cxa_dependent_exception, __cxa_allocate_dependent_exception,
        __cxa_free_dependent_exception, __get_dependent_exception_from_ue,
        __GXX_INIT_DEPENDENT_EXCEPTION_CLASS, __is_dependent_exception,
        __gxx_dependent_exception_class, __get_object_from_ue,
        __get_object_from_ambiguous_exception): Add.
        (__GXX_INIT_EXCEPTION_CLASS, __gxx_exception_class): Rename.
        (__is_gxx_exception_class): Handle dependent exceptions.
        * libsupc++/eh_arm.cc (__cxa_type_match): Likewise.
        * libsupc++/eh_call.cc (__cxa_call_unexpected): Likewise.
        * libsupc++/eh_personality.cc (__gxx_personality_*): Likewise.
        * libsupc++/eh_type.cc (__cxa_current_exception_type): Likewise.
        * libsupc++/eh_alloc.cc (__cxa_allocate_dependent_exception,
        __cxa_free_dependent_exception): Add.
        * libsupc++/eh_throw.cc (__gxx_exception_cleanup): Handle reference
        counting.
        * libsupc++/exception: Conditionally include exception_ptr.h.
        * libsupc++/Makefile.am: Register new files.
        * libsupc++/Makefile.in: Regenerate.
        * config/abi/pre/gnu.ver: Add new symbols.
        * testsuite/18_support/exception_ptr/current_exception.cc: Test the
        core functionality of current_exception().
        * testsuite/18_support/exception_ptr/rethrow_exception.cc: Test the
        core functionality of rethrow_exception().
        * testsuite/18_support/exception_ptr/lifespan.cc: Test the life span of
        exception objects during exception propagation.

From-SVN: r139064
 2008-08-13 18:14:51 +00:00