[ios::failure] p2: "When throwing ios_base::failure exceptions,
implementations should provide values of ec that identify the specific
reason for the failure."
This adds a new overload of __throw_ios_failure that can be passed
errno, to store error_code(errno, system_category()) in the exception
object.
PR libstdc++/85343
* acinclude.m4 (libtool_VERSION): Bump version.
* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add new symbol version.
Export new symbol.
* configure: Regenerate.
* doc/xml/manual/abi.xml: Document new versions.
* include/bits/fstream.tcc (basic_filebuf<C, T>::underflow)
(basic_filebuf<C, T>::xsgetn): Pass errno to __throw_ios_failure.
* include/bits/functexcept.h (__throw_ios_failure(const char*, int)):
Declare new overload.
* src/c++11/cxx11-ios_failure.cc (__ios_failure): Add new constructor
and static member function.
(__throw_ios_failure(const char*, int)): Define.
* src/c++98/ios_failure.cc [!_GLIBCXX_USE_DUAL_ABI]
(__throw_ios_failure(const char*, int)): Define.
* testsuite/util/testsuite_abi.cc: Update known and latest versions.
From-SVN: r263535
Ensure that nothrow versions of new and delete call the ordinary
versions of new or delete, instead of calling malloc or free directly.
These files are all compiled with -std=gnu++14 so can use noexcept and
nullptr to make the code more readable.
PR libstdc++/68210
* doc/xml/manual/intro.xml: Document LWG 206 change.
* libsupc++/del_op.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opa.cc: Likewise.
* libsupc++/del_opant.cc: Likewise.
* libsupc++/del_opnt.cc: Likewise. Call operator delete(ptr) instead
of free(ptr).
* libsupc++/del_ops.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opsa.cc: Likewise.
* libsupc++/del_opva.cc: Likewise.
* libsupc++/del_opvant.cc: Likewise.
* libsupc++/del_opvnt.cc: Likewise. Call operator delete[](ptr)
instead of operator delete(ptr).
* libsupc++/del_opvs.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opvsa.cc: Likewise.
* libsupc++/new_op.cc: Use __builtin_expect in check for zero size.
* libsupc++/new_opa.cc: Use nullptr instead of literal 0.
* libsupc++/new_opant.cc: Likewise. Replace _GLIBCXX_USE_NOEXCEPT
with noexcept.
* libsupc++/new_opnt.cc: Likewise. Call operator new(sz) instead of
malloc(sz).
* libsupc++/new_opvant.cc: Use nullptr and noexcept.
* libsupc++/new_opvnt.cc: Likewise. Call operator new[](sz) instead of
operator new(sz, nothrow).
* testsuite/18_support/new_nothrow.cc: New test.
From-SVN: r263478
Instead of repeating all the old headers for every new standard I've
changed the docs to only list the new headers for each standard.
* doc/xml/manual/test.xml: Improve documentation on writing tests for
newer standards.
* doc/xml/manual/using.xml: Document all headers for C++11 and later.
* doc/html/*: Regenerate.
From-SVN: r263163
When deduction guides are supported by the compiler (i.e. for C++17 and
later) replace two basic_string constructors by constrained function
templates as required by LWG 3075. In order to ensure that the pre-C++17
non-template constructors are still exported from the shared library
define a macro in src/c++11/string-inst.cc to force the non-template
declarations (this isn't strictly needed yet, because the string
instantiations are compiled with -std=gnu++11, but that is likely to
change).
LWG 3076 basic_string CTAD ambiguity
* doc/xml/manual/intro.xml: Document LWG 3076 change.
* include/bits/basic_string.h
[__cpp_deduction_guides && !_GLIBCXX_DEFINING_STRING_INSTANTIATIONS]
(basic_string(const _CharT*, const _Alloc&)): Turn into a function
template constrained by _RequireAllocator.
(basic_string(size_type, _CharT, const _Alloc&)): Likewise.
* src/c++11/string-inst.cc (_GLIBCXX_DEFINING_STRING_INSTANTIATIONS):
Define.
* testsuite/21_strings/basic_string/cons/char/deduction.cc: Test
deduction
* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
Likewise.
From-SVN: r261670
* doc/xml/faq.xml: Link to C++17 status. Add note to outdated answer.
* doc/xml/manual/debug_mode.xml: Add array and forward_list to list
of C++11 containers with Debug Mode support.
* doc/xml/manual/using.xml: Document Dual ABI for ios_base::failure.
* doc/html/*: Regenerate.
From-SVN: r260129
2017-11-21 Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
* doc/xml/manual/using.xml (manual.intro.using.macros): Move
variablelist element at the end of its list.
From-SVN: r255023
Also fix declarations of special functions in C++17, to import them into
the global namespace in <math.h>, and to prevent defining the
non-standard hypergeometric functions in strict mode.
PR libstdc++/82644
* doc/xml/manual/intro.xml: Include new section.
* doc/xml/manual/status_cxxis29124.xml: New section on IS 29124
status.
* include/bits/specfun.h [__STRICT_ANSI__] (hyperg, hypergf, hypergl)
(conf_hyperg, conf_hypergf, conf_hypergl): Don't declare.
* include/c_compatibility/math.h: Import special functions into
global namespace for C++17.
* testsuite/26_numerics/headers/cmath/82644.cc: New test.
* testsuite/26_numerics/headers/cmath/functions_global_c++17.cc: New
test.
From-SVN: r254004
PR libstdc++/79433
* doc/xml/manual/status_cxx2017.xml: Update feature-test macros.
* doc/html/*: Regenerate.
* include/Makefile.am: Remove <bits/c++17_warning.h>.
* include/Makefile.in: Regenerate.
* include/bits/c++17_warning.h: Remove.
* include/bits/string_view.tcc: Do not include <bits/c++17_warning.h>
for pre-C++17 modes.
* include/std/any: Likewise.
(__cpp_lib_any): Define.
* include/std/mutex (__cpp_lib_scoped_lock): Adjust value as per new
SD-6 draft.
* include/std/numeric (__cpp_lib_gcd_lcm): Define as per new SD-6
draft.
* include/std/optional: Do not include <bits/c++17_warning.h>.
(__cpp_lib_optional): Define.
* include/std/shared_mutex: Do not include <bits/c++14_warning.h>.
* include/std/string_view: Do not include <bits/c++17_warning.h>.
(__cpp_lib_string_view): Define.
* include/std/variant: Do not include <bits/c++17_warning.h>.
(__cpp_lib_variant): Define.
* testsuite/20_util/optional/cons/value_neg.cc: Adjust dg-error line
numbers.
* testsuite/26_numerics/gcd/1.cc: Test for __cpp_lib_gcd_lcm.
* testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line
numbers.
* testsuite/26_numerics/lcm/1.cc: Test for __cpp_lib_gcd_lcm.
* testsuite/26_numerics/lcm/lcm_neg.cc: Adjust dg-error line
numbers.
* testsuite/30_threads/scoped_lock/requirements/typedefs.cc: Adjust
expected value of __cpp_lib_scoped_lock.
From-SVN: r252018
* doc/xml/faq.xml: Update several old entries. Improve
cross-references.
* doc/xml/manual/intro.xml: Add anchors to each DR.
* doc/html/*: Regenerate.
From-SVN: r250125
PR libstdc++/81092
* acinclude.m4: Bump libtool_VERSION.
* config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
* config/abi/pre/gnu.ver: Add wstring constructor symbols to
GLIBCXX_3.4.24 version and move random_device::_M_get_entropy() symbol
to new GLIBCXX_3.4.25 version.
* doc/xml/manual/abi.xml: Document new versions.
* doc/html/*: Regenerate.
* testsuite/21_strings/basic_string/cons/char/8.cc: Use base object
constructors to ensure required symbols are exported.
* testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
* testsuite/util/testsuite_abi.cc: Add new version.
From-SVN: r249246
As discussed in PR c++/80265 ("__builtin_{memcmp,memchr,strlen} are
not usable in constexpr functions"), use __builtin_constant_p to tell
whether we can defer to a constexpr algorithm.
I used __always_inline__ just to be thorough. It isn't really really
necessary as far as I could determine.
Changes like these:
if (__n == 0)
return 0;
- return wmemcmp(__s1, __s2, __n);
+ else
+ return wmemcmp(__s1, __s2, __n);
are necessary otherwise G++ complains that we're calling a
non-constexpr function, which looks like a a manifestation of PR67026
to me.
libstdc++-v3:
2017-06-12 Pedro Alves <palves@redhat.com>
* doc/xml/manual/status_cxx2017.xml: Update C++17 constexpr
char_traits status.
* doc/html/*: Regenerate.
* include/bits/char_traits.h (_GLIBCXX_ALWAYS_INLINE): Define if
not already defined.
(__cpp_lib_constexpr_char_traits): Uncomment.
(__constant_string_p, __constant_char_array_p): New.
(std::char_traits<char>, std::char_traits<wchar_t>): Add
_GLIBCXX17_CONSTEXPR on compare, length and find and use
__constant_string_p, __constant_char_array_p and
__builtin_constant_p to defer to __gnu_cxx::char_traits at compile
time.
* testsuite/21_strings/char_traits/requirements/
constexpr_functions_c++17.cc: Uncomment
__cpp_lib_constexpr_char_traits tests. Uncomment
test_compare<char>, test_length<char>, test_find<char>,
test_compare<wchar_t>, test_length<wchar_t> and test_find<wchar_t>
static_assert tests.
From-SVN: r249137
2017-05-23 Xi Ruoyao <ryxi@stu.xidian.edu.cn>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/67578
* acinclude.m4: Bump libtool_VERSION.
* config/abi/pre/gnu.ver: Create GLIBCXX_3.4.24 with new symbol.
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Add test for <linux/random.h>.
* doc/xml/manual/abi.xml: Document new library version.
* include/bits/random.h (random_device::entropy)
[_GLIBCXX_USE_RANDOM_TR1]: Add call to new _M_getentropy member.
(random_device::_M_getentropy): Declare.
* src/c++11/random.cc (random_device::_M_getentropy): Define.
* testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.24 to known
versions, and make it the latest version.
Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>
From-SVN: r248374
* doc/xml/manual/abi.xml: Rephrase one of the references to the
Itanium C++ ABI.
* doc/xml/manual/test.xml: Document DejaGnu 1.5.3 requirement.
* doc/html/*: Regenerate.
From-SVN: r247003
