Construct new elements before moving existing ones, so that if a default
constructor throws, the existing elements are not left in a moved-from
state.
2018-06-14 Daniel Trebbien <dtrebbien@gmail.com>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/83982
* include/bits/vector.tcc (vector::_M_default_append(size_type)):
Default-construct new elements before moving existing ones.
* testsuite/23_containers/vector/capacity/resize/strong_guarantee.cc:
New.
Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>
From-SVN: r261585
There is no need to use an allocator of the correct value_type when
calling allocator_traits::construct and allocator_traits::destroy. The
existing node allocator can be used, instead of constructing a new
allocator object every time.
There's also no benefit to using __gnu_cxx::__alloc_traits instead of
std::allocator_traits to get the pointer and const_pointer types.
std::forward_list is only available for C++11 and later, when
std::allocator_traits is available too.
PR libstdc++/86127
* include/bits/forward_list.h (_Fwd_list_base::_Tp_alloc_type): Remove
unused typedef.
(_Fwd_list_base::_Node_alloc_traits): Use allocator_traits instead of
__gnu_cxx::__alloc_traits.
(_Fwd_list_base::_M_create_node, _Fwd_list_base::_M_erase_after):
Use node allocator to create and destroy elements.
(forward_list::_Tp_alloc_type): Remove unused typedef.
(forward_list::_Alloc_traits): Use allocator_traits instead of
__gnu_cxx::__alloc_traits.
From-SVN: r261554
* include/bits/regex.h (sub_match): Add noexcept to default
constructor and length observer.
(match_results): Add noexcept to default constructor and observers
with no preconditions. Define destructor as defaulted.
(operator==, operator!=, swap): Add noexcept.
(regex_iterator): Add default member initializers and define default
constructor and destructor as defaulted. Add noexcept to equality
and dereference operators.
From-SVN: r261266
PR c++/86068
* c-cppbuiltin.c (c_cpp_builtins): Fix a typo, set
__cpp_transactional_memory to 201500 instead of 210500.
* include/bits/c++config: Check __cpp_transactional_memory >= 201500L
rather than __cpp_transactional_memory >= 201505L.
From-SVN: r261242
PR libstdc++/78870 support std::filesystem on Windows
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Check for link, readlink and symlink.
* include/bits/fs_path.h (path::operator/=(const path&)): Move
definition out of class body.
(path::is_absolute(), path::_M_append(path)): Likewise.
(operator<<(basic_ostream, const path&)): Use std::quoted directly.
(operator>>(basic_istream, path&)): Likewise.
(u8path): Reorder definitions and fix Windows implementation.
(path::is_absolute()): Define inline and fix for Windows.
[!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
Define POSIX version inline.
(path::_M_append(path)): Define inline.
* include/experimental/bits/fs_path.h (path::is_absolute()): Move
definition out of class body.
(operator<<(basic_ostream, const path&)): Fix type of delimiter and
escape characters.
(operator>>(basic_istream, path&)): Likewise.
(path::is_absolute()): Define inline and fix for Windows.
* src/filesystem/dir-common.h (__gnu_posix): New namespace.
(__gnu_posix::char_type, __gnu_posix::DIR, __gnu_posix::dirent)
(__gnu_posix::opendir, __gnu_posix::readdir, __gnu_posix::closedir):
Define as adaptors for Windows functions/types or as
using-declarations for POSIX functions/types.
(_Dir_base, get_file_type): Qualify names to use declarations from
__gnu_posix namespace.
(_Dir_base::is_dor_or_dotdot): New helper functions.
* src/filesystem/dir.cc (_Dir, recursive_directory_iterator): Qualify
names to use declarations from __gnu_posix namespace.
* src/filesystem/ops-common.h (__gnu_posix): New nested namespace.
(__gnu_posix::open, __gnu_posix::close, __gnu_posix::stat_type)
(__gnu_posix::stat, __gnu_posix::lstat, __gnu_posix::mode_t)
(__gnu_posix::chmod, __gnu_posix::mkdir, __gnu_posix::getcwd)
(__gnu_posix::chdir, __gnu_posix::utimbuf, __gnu_posix::utime)
(__gnu_posix::rename, __gnu_posix::truncate, __gnu_posix::char_type):
Define as adaptors for Windows functions/types or as
using-declarations for POSIX functions/types.
(stat_type, do_copy_file): Qualify names to use declarations from
__gnu_posix namespace.
(do_space): Declare new function.
(make_file_type): Only use S_ISLNK if defined.
* src/filesystem/ops.cc (char_ptr, filesystem::canonical): Use
path::value_type not char.
(filesystem::copy, create_dir, filesystem::create_directory): Qualify
names to use declarations from __gnu_posix namespace.
(filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
add implementation for Windows.
(filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
(filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
[!_PC_PATH_MAX]: Don't use pathconf.
[PATH_MAX]: Use if defined.
(filesystem::current_path(const path&, error_code&))
(filesystem::equivalent, do_stat, filesystem::hard_link_count)
(filesystem::last_write_time, filesystem::permissions): Use names
from __gnu_posix.
(filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
(filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
implementation for Windows.
(filesystem::rename, filesystem::resize_file): Use names from
__gnu_posix.
(filesystem::space): Use do_space.
[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Get absolute path to directory.
(filesystem::status, filesystem::symlink_status): Use names from
__gnu_posix.
(filesystem::temp_directory_path): Add implementation for Windows.
* src/filesystem/path.cc (dot): Define constant.
(path::replace_extension): Use dot.
(path::_M_find_extension): Likewise. Use path::string_type not
std::string.
(path::_M_split_cmpts): Use dot.
(filesystem_error::_M_get_what): Use u8string() not native().
* src/filesystem/std-dir.cc (_Dir, recursive_directory_iterator):
Qualify names to use declarations from __gnu_posix namespace.
* src/filesystem/std-ops.cc (filesystem::absolute(const path&)): Use
correct error_code.
(filesystem::absolute(const path&, error_code&)): Add implementation
for Windows.
(char_ptr, filesystem::canonical): Use path::value_type not char.
(do_copy_file): Use names from __gnu_posix.
[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Do not use fchmod, fchmodat or
sendfile.
(filesystem::copy, create_dir, filesystem::create_directory): Qualify
names to use declarations from __gnu_posix namespace.
(filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
add implementation for Windows.
(filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
(filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
[!_PC_PATH_MAX]: Don't use pathconf.
[PATH_MAX]: Use if defined.
(filesystem::current_path(const path&, error_code&))
(filesystem::equivalent, do_stat, filesystem::hard_link_count)
(filesystem::last_write_time, filesystem::permissions): Use names
from __gnu_posix.
(filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
(filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
implementation for Windows.
(filesystem::rename, filesystem::resize_file): Use names from
__gnu_posix.
(do_space): Define.
(filesystem::space): Use do_space.
(filesystem::status, filesystem::symlink_status): Use names from
__gnu_posix.
(filesystem::temp_directory_path): Add implementation for Windows.
* src/filesystem/std-path.cc
[_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
Define for Windows.
(dot): Define constant.
(path::replace_extension, is_dot): Use dot.
(path::lexically_normal): Check _M_type instead of calling
non-existent function.
(path::_M_find_extension): Use dot. Use path::string_type not
std::string.
(path::_M_split_cmpts): Use dot.
(filesystem_error::_M_get_what): Use u8string() not native().
* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Do not
use symlinks.
* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
Likewise.
* testsuite/27_io/filesystem/operations/absolute.cc: Use
__gnu_test::root_path() instead of "/" and add Windows-specific tests.
* testsuite/27_io/filesystem/operations/canonical.cc: Use
path::string() to get narrow string, not path::native().
* testsuite/27_io/filesystem/operations/copy.cc: Construct fstreams
with std::filesystem::path not std::basic_string.
* testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
* testsuite/27_io/filesystem/operations/exists.cc: Use
__gnu_test::root_path() instead of "/".
* testsuite/27_io/filesystem/operations/is_empty.cc: Construct
fstreams with std::filesystem::path not std::basic_string.
* testsuite/27_io/filesystem/operations/last_write_time.cc: Use
path::string() to get narrow string.
* testsuite/27_io/filesystem/operations/space.cc: Check results for
errors, expect sensible values otherwise.
* testsuite/27_io/filesystem/operations/temp_directory_path.cc: Add
helpers for adjusting the environment on Windows.
* testsuite/27_io/filesystem/path/append/path.cc: Test
Windows-specific behaviour.
* testsuite/27_io/filesystem/path/construct/format.cc: Fix creation
of path::string_type objects.
* testsuite/27_io/filesystem/path/construct/locale.cc: Compare native
string to wide string on Windows.
* testsuite/27_io/filesystem/path/decompose/root_directory.cc: Allow
for backslash as root-directory.
* testsuite/27_io/filesystem/path/decompose/stem.cc: Use
path::string() to get narrow string.
* testsuite/27_io/filesystem/path/itr/traversal.cc: Test Windows-style
paths.
* testsuite/27_io/filesystem/path/native/string.cc: Use string_type
not std::string.
* testsuite/27_io/filesystem/path/query/is_absolute.cc: Adjust for
different definintion of absolute paths on Windows.
* testsuite/experimental/filesystem/iterators/directory_iterator.cc:
Do not use symlinks.
* testsuite/experimental/filesystem/operations/absolute.cc: Test
Windows behaviour.
* testsuite/experimental/filesystem/operations/copy.cc: Construct
fstreams with NTCTS not std::basic_string.
* testsuite/experimental/filesystem/operations/copy_file.cc: Likewise.
* testsuite/experimental/filesystem/operations/exists.cc: Use
__gnu_test::root_path() instead of "/".
* testsuite/experimental/filesystem/operations/is_empty.cc: Construct
fstreams with NTCTS not std::basic_string.
* testsuite/experimental/filesystem/operations/last_write_time.cc:
Use path::string() to get narrow string.
* testsuite/experimental/filesystem/operations/space.cc: Use
__gnu_test::root_path() instead of "/".
* testsuite/experimental/filesystem/operations/temp_directory_path.cc:
Add helpers for adjusting the environment on Windows.
* testsuite/experimental/filesystem/path/append/path.cc: Use
path::string() to get narrow strings for comparisons.
* testsuite/experimental/filesystem/path/concat/path.cc: Likewise.
* testsuite/experimental/filesystem/path/decompose/root_directory.cc:
Likewise.
* testsuite/experimental/filesystem/path/decompose/stem.cc: Likewise.
* testsuite/experimental/filesystem/path/native/string.cc: Use
string_type not std::string.
* testsuite/experimental/filesystem/path/query/is_absolute.cc:
Adjust for different definintion of absolute paths on Windows.
* testsuite/util/testsuite_fs.h (__gnu_test::root_path()): New
function.
(__gnu_test::scoped_file): Construct fstreams with NTCTS not
std::basic_string.
From-SVN: r261034
The restrictions forbidding arithmetic on atomic pointer types are only
enabled for C++17 and later, retaining the GNU extension for older
standards. The new nested typedefs and changes to prevent scalar
parameters participating in template argument deduction are enabled
unconditionally.
PR libstdc++/69769
PR libstdc++/85886
* include/bits/atomic_base.h (__atomic_base::value_type)
(__atomic_base::difference_type): Add new typedefs.
* include/std/atomic (atomic<bool>::value_type, atomic<T>::value_type)
(atomic<T*>::value_type, atomic<T*>::difference_type): Likewise.
(atomic<T*>::operator++, atomic<T*>::operator--)
(atomic<T*>::operator+=, atomic<T*>::operator-=)
(atomic<T*>::fetch_add, atomic<T*>::fetch_sub): Add static assertion
to enforce C++17 requirement on pointer arithmetic.
(__atomic_val_t, __atomic_diff_t): New alias templates.
(atomic_init, atomic_store_explicit, atomic_exchange_explicit)
(atomic_compare_exchange_weak_explicit)
(atomic_compare_exchange_strong_explicit, atomic_store)
(atomic_exchange, atomic_compare_exchange_weak)
(atomic_compare_exchange_strong): Use __atomic_val_t to make
scalar parameters be non-deduced contexts.
(atomic_fetch_add_explicit, atomic_fetch_sub_explicit)
(atomic_fetch_add, atomic_fetch_sub): Change first parameter to be
atomic instead of __atomic_base, and use __atomic_diff_t for scalar
parameters.
(atomic_fetch_and_explicit, atomic_fetch_or_explicit)
(atomic_fetch_xor_explicit, atomic_fetch_and, atomic_fetch_or)
(atomic_fetch_xor): Use __atomic_val_t for scalar parameters.
(atomic_fetch_add_explicit, atomic_fetch_sub_explicit)
(atomic_fetch_add, atomic_fetch_sub): Remove overloads for atomic
address types.
* testsuite/29_atomics/atomic/60695.cc: Adjust dg-error lineno.
* testsuite/29_atomics/atomic/69769.cc: New test.
* testsuite/29_atomics/atomic/nonmembers.cc: New test.
* testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
Disable test for C++17 and later.
* testsuite/29_atomics/atomic/requirements/typedefs.cc: New test.
* testsuite/29_atomics/atomic_integral/nonmembers.cc: New test.
* testsuite/29_atomics/atomic_integral/requirements/typedefs.cc: New
test.
From-SVN: r260676
Move duplicated code to new _S_string_from_iter function and fix
constraints to accept iterators with const value type.
* include/bits/fs_path.h (path::__is_encoded_char): Change from class
template to alias template.
(path::__value_type_is_char): Use remove_const_t.
(path:_S_string_from_iter): New helper function.
(path::_S_convert(InputIter, __null_terminated))
(path::_S_convert_loc(InputIter, __null_terminated, const locale&)):
Use _S_string_from_iter.
(path::string<_CharT, _Allocator>(const _Allocator&)): Allow sharing
rep for COW strings.
* include/experimental/bits/fs_path.h (path::__is_encoded_char):
Change from class template to alias template.
(path::__value_type_is_char): Use remove_const.
(path:_S_string_from_iter): New helper function.
(path::_S_convert(InputIter, __null_terminated))
(path::_S_convert_loc(InputIter, __null_terminated, const locale&)):
Use _S_string_from_iter.
* testsuite/27_io/filesystem/path/append/source.cc: Test appending
wide strings.
* testsuite/27_io/filesystem/path/concat/strings.cc: Check for exact
string equality, not path equivalence.
* testsuite/27_io/filesystem/path/construct/format.cc: Check
construction from std::string and std::wstring and input iterators.
* testsuite/27_io/filesystem/path/construct/locale.cc: Check
construction from iterators.
* testsuite/experimental/filesystem/path/concat/strings.cc: Check for
exact string equality, not path equivalence.
* testsuite/experimental/filesystem/path/construct/locale.cc: Check
construction from iterators.
From-SVN: r260628
The C++17 std::filesystem::path grammar allows an empty filename as the
last component (to signify a trailing slash). The existing code does not
handle this consistently, sometimes an empty filename has type _Multi
and sometimes it has type _Filename. This can result in a non-empty
iterator range for an empty filename component.
This change ensures that empty paths always have type _Filename and will
yield an empty iterator range.
* include/bits/fs_path.h (path::_M_type): Change default member
initializer to _Filename.
(path::begin): Create past-the-end iterator for empty path.
* src/filesystem/std-path.cc (path::remove_filename()): Remove
debugging check.
(path::has_relative_path()): Return false for empty filenames.
(path::_M_split_cmpts): Set _M_type to _Filename for empty paths.
Fix offset of empty final component.
* testsuite/27_io/filesystem/path/itr/components.cc: New.
* testsuite/27_io/filesystem/path/itr/traversal.cc: Add new inputs.
From-SVN: r260616
In C++11 and C++14 any odr-use of these constants requires a definition
at namespace-scope. In C++17 they are implicitly inline and so the
namespace-scope redeclarations are redundant (and allowing them is
deprecated).
PR libstdc++/85098
* include/bits/regex.h [__cplusplus < 201703L] (basic_regex::icase)
(basic_regex::nosubs, basic_regex::optimize, basic_regex::collate)
(basic_regex::ECMAScript, basic_regex::basic, basic_regex::extended)
(basic_regex::awk, basic_regex::grep, basic_regex::egrep): Add
definitions.
* include/bits/regex_automaton.h (_NFA::_M_insert_state): Adjust
whitespace.
* include/bits/regex_compiler.tcc (__INSERT_REGEX_MATCHER): Add
braces around body of do-while.
* testsuite/28_regex/basic_regex/85098.cc: New
From-SVN: r260371
Constrain constructors and member functions of random number engines so
that functions taking seed sequences can only be called with types that
meet the seed sequence requirements.
PR libstdc++/85749
* include/bits/random.h (__detail::__is_seed_seq): New SFINAE helper.
(linear_congruential_engine, mersenne_twister_engine)
(subtract_with_carry_engine, discard_block_engine)
(independent_bits_engine, shuffle_order_engine): Use __is_seed_seq to
constrain function templates taking seed sequences.
* include/bits/random.tcc (linear_congruential_engine::seed(_Sseq&))
(mersenne_twister_engine::seed(_Sseq&))
(subtract_with_carry_engine::seed(_Sseq&)): Change return types to
match declarations.
* include/ext/random (simd_fast_mersenne_twister_engine): Use
__is_seed_seq to constrain function templates taking seed sequences.
* include/ext/random.tcc (simd_fast_mersenne_twister_engine::seed):
Change return type to match declaration.
* testsuite/26_numerics/random/discard_block_engine/cons/seed_seq2.cc:
New.
* testsuite/26_numerics/random/independent_bits_engine/cons/
seed_seq2.cc: New.
* testsuite/26_numerics/random/linear_congruential_engine/cons/
seed_seq2.cc: New.
* testsuite/26_numerics/random/mersenne_twister_engine/cons/
seed_seq2.cc: New.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
* testsuite/26_numerics/random/shuffle_order_engine/cons/seed_seq2.cc:
New.
* testsuite/26_numerics/random/subtract_with_carry_engine/cons/
seed_seq2.cc: New.
* testsuite/ext/random/simd_fast_mersenne_twister_engine/cons/
seed_seq2.cc: New.
From-SVN: r260263
The correct definition seems to be has_root_directory() for all systems
we care about.
PR libstdc++/83891
* include/bits/fs_path.h (path::is_absolute()): Use same definition
for all operating systems.
* include/experimental/bits/fs_path.h (path::is_absolute()): Likewise.
* testsuite/27_io/filesystem/path/query/is_absolute.cc: New.
* testsuite/27_io/filesystem/path/query/is_relative.cc: Fix comment.
* testsuite/experimental/filesystem/path/query/is_absolute.cc: New.
From-SVN: r260259
The path::operator/=(const Source&) and path::append overloads were
still following the semantics of the Filesystem TS not C++17. Only
the path::operator/=(const path&) overload was correct.
This change adds more tests for path::operator/=(const path&) and adds
new tests to verify that the other append operations have equivalent
behaviour.
PR libstdc++/84159
* include/bits/fs_path.h (path::operator/=, path::append): Construct
temporary path before calling _M_append.
(path::_M_append): Change parameter to path and implement C++17
semantics.
* testsuite/27_io/filesystem/path/append/path.cc: Add helper function
and more examples from the standard.
* testsuite/27_io/filesystem/path/append/source.cc: New.
* testsuite/27_io/filesystem/path/decompose/filename.cc: Add comment.
* testsuite/27_io/filesystem/path/nonmember/append.cc: New.
From-SVN: r260255
PR libstdc++/81256
* include/bits/fstream.tcc (basic_filebuf::close): Do not swallow
exceptions from _M_terminate_output().
* include/std/fstream (basic_filebuf::~basic_filebuf): Swallow any
exceptions from close().
* testsuite/27_io/basic_filebuf/close/81256.cc: New.
From-SVN: r260236
PR libstdc++/82966
* include/bits/node_handle.h (_Node_handle_common::_M_swap): Use value
instead of type.
* testsuite/23_containers/set/modifiers/node_swap.cc: New.
From-SVN: r260226
To satisfy the CopyConstructible requirement a callable object stored in
a std::function must behave the same when copied from a const or
non-const source. If copying a non-const object doesn't produce an
equivalent copy then the behaviour is undefined. But we can make our
std::function more tolerant of such objects by ensuring we always copy
from a const lvalue.
Additionally use an if constexpr statement in the _M_get_pointer
function to avoid unnecessary instantiations in the discarded branch.
* include/bits/std_function.h (_Base_manager::_M_get_pointer):
Use constexpr if in C++17 mode.
(_Base_manager::_M_clone(_Any_data&, const _Any_data&, true_type)):
Copy from const object.
* testsuite/20_util/function/cons/non_copyconstructible.cc: New.
From-SVN: r260080
Restore the behaviour in GCC 8 and earlier where _GLIBCXX_USE_FLOAT128
is not defined when configure detects support is missing. This avoids
having three states where the macro is either 1, 0, or undefined.
PR libstdc++/85672
* include/Makefile.am [!ENABLE_FLOAT128]: Change c++config.h entry
to #undef _GLIBCXX_USE_FLOAT128 instead of defining it to zero.
* include/Makefile.in: Regenerate.
* include/bits/c++config (_GLIBCXX_USE_FLOAT128): Move definition
within conditional block.
From-SVN: r260043
By performing the /= operation on a named local variable instead of a
temporary the copy made for the return value can be elided.
PR libstdc++/85671
* include/bits/fs_path.h (operator/): Permit copy elision.
* include/experimental/bits/fs_path.h (operator/): Likewise.
From-SVN: r260009
2018-05-07 Edward Smith-Rowland <3dw4rd@verizon.net>
Moar PR libstdc++/80506
* include/bits/random.tcc (gamma_distribution::__generate_impl()):
Fix magic number used in loop condition.
Actually put the file in.
Don't know what my problem is today...
From-SVN: r260008
The suggested resolution of LWG 3083 is to make invalid indices
undefined, but we can fairly easily check for them and treat them as
errors in the same way as allocation failure. This avoids a segfault or
worse, setting an error flag on the stream instead.
PR libstdc++/68197
* include/bits/ios_base.h (ios_base::iword, ios_base::pword): Cast
indices to unsigned.
* src/c++11/ios.cc (ios_base::_M_grow_words): Treat negative indices
as failure. Refactor error handling.
* testsuite/27_io/ios_base/storage/68197.cc: New.
From-SVN: r259854
Store nested closures by value not by reference, to prevent holding
invalid references to temporaries that have been destroyed. This
changes the layout of the closure types, so change their linkage names,
but moving them to a different namespace.
PR libstdc++/57997
PR libstdc++/83860
* include/bits/gslice_array.h (gslice_array): Define default
constructor as deleted, as per C++11 standard.
* include/bits/mask_array.h (mask_array): Likewise.
* include/bits/slice_array.h (slice_array): Likewise.
* include/bits/valarray_after.h (_GBase, _GClos, _IBase, _IClos): Move
to namespace __detail.
(_GBase::_M_expr, _IBase::_M_expr): Use _ValArrayRef for type of data
members.
* include/bits/valarray_before.h (_ValArrayRef): New helper for type
of data members in closure objects.
(_FunBase, _ValFunClos, _RefFunClos, _UnBase, _UnClos, _BinBase)
(_BinBase2, _BinBase1, _BinClos, _SBase, _SClos): Move to namespace
__detail.
(_FunBase::_M_expr, _UnBase::_M_expr, _BinBase::_M_expr1)
(_BinBase::_M_expr2, _BinBase2::_M_expr1, _BinBase1::_M_expr2)
(_SBase::_M_expr): Use _ValArrayRef for type of data members.
* include/std/valarray (_UnClos, _BinClos, _SClos, _GClos, _IClos)
(_ValFunClos, _RefFunClos): Move to namespace __detail and add
using-declarations to namespace std.
* testsuite/26_numerics/valarray/83860.cc: New.
From-SVN: r259844
2018-05-01 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.
From-SVN: r259813
In order for std::less<T*> etc. to meet the total order requirements of
[comparisons] p2 we need to cast unrelated pointers to uintptr_t before
comparing them. Those casts aren't allowed in constant expressions, so
only cast when __builtin_constant_p says the result of the comparison is
not a compile-time constant (because the arguments are not constants, or
the result of the comparison is unspecified). When the result is
constant just compare the pointers directly without casting.
This ensures that the function can be called in constant expressions
with suitable arguments, but still yields a total order even for
otherwise unspecified pointer comparisons.
For std::less<void> etc. add new overloads for pointers, which use
std::less<common_type_t<T*,U*>> directly. Also change the generic
overloads to detect when the comparison would call a built-in relational
operator with pointer operands, and dispatch that case to the
corresponding specialization for void pointers.
PR libstdc++/78420
* include/bits/stl_function.h (greater<_Tp*>, less<_Tp*>)
(greater_equal<_Tp*>, less_equal<_Tp>*): Add partial specializations
to ensure total order for pointers.
(greater<void>, less<void>, greater_equal<void>, less_equal<void>):
Add operator() overloads for pointer arguments and make generic
overloads dispatch to new _S_cmp functions when comparisons would
use built-in operators for pointers.
* testsuite/20_util/function_objects/comparisons_pointer.cc: New.
From-SVN: r258540
PR libstdc++/83600
* include/bits/regex.h (match_results::end()): Return valid iterator
when not ready.
* testsuite/28_regex/match_results/ctors/char/default.cc: Check that
unready objects are empty and have equal begin and end iterators.
* testsuite/28_regex/match_results/ctors/wchar_t/default.cc: Likewise.
From-SVN: r256014
PR libstdc++/83427
* include/bits/refwrap.h (_Maybe_unary_or_binary_function): Move here
from <bits/std_function.h>.
(_Mem_fn_traits_base, _Mem_fn_traits): Move here, from <functional>.
(_Weak_result_type_impl, _Reference_wrapper_base): Deduce noexcept
for function types. Remove partial specializations for member
functions.
(_Weak_result_type_impl): Remove unused partial specializations for
non-referenceable function types and for references to functions.
(_Weak_result_type_memfun, _Reference_wrapper_base_memfun): New
helpers to handle member functions via _Mem_fn_traits.
(_Weak_result_type, reference_wrapper): Derive from new helpers.
* include/bits/std_function.h (_Maybe_unary_or_binary_function): Move
to <bits/refwrap.h>.
* include/std/functional (_Pack, _AllConvertible, _NotSame): Remove.
(_Mem_fn_traits_base, _Mem_fn_traits): Move to <bits/refwrap.h>.
* testsuite/20_util/bind/83427.cc: New test.
* testsuite/20_util/bind/refqual.cc: Add noexcept to functions and
check for weak result types.
* testsuite/20_util/reference_wrapper/83427.cc: New test.
From-SVN: r255651
* include/bits/regex_compiler.tcc: Use C-style comment to work around
PR preprocessor/61638.
(__INSERT_REGEX_MATCHER): Replace GNU extension with __VA_ARGS__.
From-SVN: r255392
2017-11-17 Marc Glisse <marc.glisse@inria.fr>
* include/bits/vector.tcc (vector::_M_realloc_insert): Cache old
values before the allocation.
From-SVN: r254849
* include/bits/hashtable_policy.h: Include <tuple>.
* include/std/unordered_map: Only include <bits/stl_pair.h> instead
of <utility> and <tuple>.
* include/std/unordered_set: Likewise.
From-SVN: r254223
Based on Filesystem TS implementation, with the changes applied by:
- P0219R1 Relative Paths for Filesystem
- P0317R1 Directory Entry Caching for Filesystem
- P0492R2 Resolution of C++17 National Body Comments
Where appropriate code is shared between the TS and C++17
implementations.
* include/Makefile.am: Add new headers for C++17 filesystem library.
* include/Makefile.in: Regenerate.
* include/bits/fs_dir.h: New header, based on Filesystem TS code in
include/experimental/bits directory.
* include/bits/fs_fwd.h: Likewise.
* include/bits/fs_ops.h: Likewise.
* include/bits/fs_path.h: Likewise.
* include/experimental/bits/fs_dir.h: Rename Doxygen group.
* include/experimental/bits/fs_fwd.h: Likewise.
* include/experimental/bits/fs_ops.h: Likewise.
* include/experimental/bits/fs_path.h: Likewise.
* include/experimental/filesystem (filesystem_error::_M_gen_what):
Remove inline definition.
* include/precompiled/stdc++.h: Add <filesystem> to precompiled
header.
* include/std/filesystem: New header.
* python/libstdcxx/v6/printers.py: Enable printer for std::filesystem
paths.
* src/filesystem/Makefile.am: Add new files. Compile as C++17.
* src/filesystem/Makefile.in: Regenerate.
* src/filesystem/cow-dir.cc: Update comment.
* src/filesystem/cow-ops.cc: Likewise.
* src/filesystem/cow-path.cc: Likewise.
* src/filesystem/cow-std-dir.cc: New file.
* src/filesystem/cow-std-ops.cc: New file.
* src/filesystem/cow-std-path.cc: New file.
* src/filesystem/dir-common.h (_Dir_base, get_file_type): New header
for common code.
* src/filesystem/dir.cc (_Dir): Derive from _Dir_base.
(open_dir): Move to _Dir_base constructor.
(get_file_type): Move to dir-common.h.
(recurse): Move to _Dir_base::should_recurse.
* src/filesystem/ops-common.h: New header for common code.
* src/filesystem/ops.cc (is_set, make_file_type, make_file_status)
(is_not_found_errno, file_time, do_copy_file): Move to ops-common.h.
* src/filesystem/path.cc (filesystem_error::_M_gen_what): Define.
* src/filesystem/std-dir.cc: New file, based on Filesystem TS code.
* src/filesystem/std-ops.cc: Likewise.
* src/filesystem/std-dir.cc: Likewise.
* testsuite/27_io/filesystem/iterators/directory_iterator.cc: New
test.
* testsuite/27_io/filesystem/iterators/pop.cc: New test.
* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
New test.
* testsuite/27_io/filesystem/operations/absolute.cc: New test.
* testsuite/27_io/filesystem/operations/canonical.cc: New test.
* testsuite/27_io/filesystem/operations/copy.cc: New test.
* testsuite/27_io/filesystem/operations/copy_file.cc: New test.
* testsuite/27_io/filesystem/operations/create_directories.cc: New
test.
* testsuite/27_io/filesystem/operations/create_directory.cc: New test.
* testsuite/27_io/filesystem/operations/create_symlink.cc: New test.
* testsuite/27_io/filesystem/operations/current_path.cc: New test.
* testsuite/27_io/filesystem/operations/equivalent.cc: New test.
* testsuite/27_io/filesystem/operations/exists.cc: New test.
* testsuite/27_io/filesystem/operations/file_size.cc: New test.
* testsuite/27_io/filesystem/operations/is_empty.cc: New test.
* testsuite/27_io/filesystem/operations/last_write_time.cc: New test.
* testsuite/27_io/filesystem/operations/permissions.cc: New test.
* testsuite/27_io/filesystem/operations/proximate.cc: New test.
* testsuite/27_io/filesystem/operations/read_symlink.cc: New test.
* testsuite/27_io/filesystem/operations/relative.cc: New test.
* testsuite/27_io/filesystem/operations/remove_all.cc: New test.
* testsuite/27_io/filesystem/operations/space.cc: New test.
* testsuite/27_io/filesystem/operations/status.cc: New test.
* testsuite/27_io/filesystem/operations/symlink_status.cc: New test.
* testsuite/27_io/filesystem/operations/temp_directory_path.cc: New
test.
* testsuite/27_io/filesystem/operations/weakly_canonical.cc: New test.
* testsuite/27_io/filesystem/path/append/path.cc: New test.
* testsuite/27_io/filesystem/path/assign/assign.cc: New test.
* testsuite/27_io/filesystem/path/assign/copy.cc: New test.
* testsuite/27_io/filesystem/path/compare/compare.cc: New test.
* testsuite/27_io/filesystem/path/compare/path.cc: New test.
* testsuite/27_io/filesystem/path/compare/strings.cc: New test.
* testsuite/27_io/filesystem/path/concat/path.cc: New test.
* testsuite/27_io/filesystem/path/concat/strings.cc: New test.
* testsuite/27_io/filesystem/path/construct/copy.cc: New test.
* testsuite/27_io/filesystem/path/construct/default.cc: New test.
* testsuite/27_io/filesystem/path/construct/locale.cc: New test.
* testsuite/27_io/filesystem/path/construct/range.cc: New test.
* testsuite/27_io/filesystem/path/construct/string_view.cc: New test.
* testsuite/27_io/filesystem/path/decompose/extension.cc: New test.
* testsuite/27_io/filesystem/path/decompose/filename.cc: New test.
* testsuite/27_io/filesystem/path/decompose/parent_path.cc: New test.
* testsuite/27_io/filesystem/path/decompose/relative_path.cc: New
test.
* testsuite/27_io/filesystem/path/decompose/root_directory.cc: New
test.
* testsuite/27_io/filesystem/path/decompose/root_name.cc: New test.
* testsuite/27_io/filesystem/path/decompose/root_path.cc: New test.
* testsuite/27_io/filesystem/path/decompose/stem.cc: New test.
* testsuite/27_io/filesystem/path/generation/normal.cc: New test.
* testsuite/27_io/filesystem/path/generation/proximate.cc: New test.
* testsuite/27_io/filesystem/path/generation/relative.cc: New test.
* testsuite/27_io/filesystem/path/generic/generic_string.cc: New test.
* testsuite/27_io/filesystem/path/itr/traversal.cc: New test.
* testsuite/27_io/filesystem/path/modifiers/clear.cc: New test.
* testsuite/27_io/filesystem/path/modifiers/make_preferred.cc: New
test.
* testsuite/27_io/filesystem/path/modifiers/remove_filename.cc: New
test.
* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc: New
test.
* testsuite/27_io/filesystem/path/modifiers/replace_filename.cc: New
test.
* testsuite/27_io/filesystem/path/modifiers/swap.cc: New test.
* testsuite/27_io/filesystem/path/native/string.cc: New test.
* testsuite/27_io/filesystem/path/nonmember/hash_value.cc: New test.
* testsuite/27_io/filesystem/path/query/empty.cc: New test.
* testsuite/27_io/filesystem/path/query/has_extension.cc: New test.
* testsuite/27_io/filesystem/path/query/has_filename.cc: New test.
* testsuite/27_io/filesystem/path/query/has_parent_path.cc: New test.
* testsuite/27_io/filesystem/path/query/has_relative_path.cc: New
test.
* testsuite/27_io/filesystem/path/query/has_root_directory.cc: New
test.
* testsuite/27_io/filesystem/path/query/has_root_name.cc: New test.
* testsuite/27_io/filesystem/path/query/has_root_path.cc: New test.
* testsuite/27_io/filesystem/path/query/has_stem.cc: New test.
* testsuite/27_io/filesystem/path/query/is_relative.cc: New test.
* testsuite/experimental/filesystem/path/construct/string_view.cc:
Define USE_FILESYSTEM_TS.
* testsuite/util/testsuite_fs.h: Allow use with C++17 paths as well
as Filesystem TS.
From-SVN: r254008
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
François Dumont <fdumont@gcc.gnu.org>
* include/bits/streambuf_iterator.h
(istreambuf_iterator<>::operator*()): Do not capture iterator state
in Debug assertion.
(istreambuf_iterator<>::operator++()): Likewise and remove _M_sbuf check.
(istreambuf_iterator<>::operator++(int)): Likewise.
(istreambuf_iterator<>::_M_get()): Remove _M_c assignment.
(istreambuf_iterator<>::_S_is_eof()): New.
(istreambuf_iterator<>::_M_at_eof()): Adapt, use latter.
(find(istreambuf_iterator<>, istreambuf_iterator<>, _CharT)):
Return an iterator with _M_c set to eof to capture streambuf state
on evaluation.
(testsuite/24_iterators/istreambuf_iterator/2.cc): Add checks.
Co-Authored-By: François Dumont <fdumont@gcc.gnu.org>
From-SVN: r253417
PR libstdc++/79162
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::_If_sv): Remove from the overload set when the
argument is derived from basic_string.
From-SVN: r253035
PR libstdc++/79162
* include/bits/basic_string.h (basic_string::_If_sv): Remove from the
overload set when the argument is derived from basic_string.
* testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc: New
test.
* testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
New test.
From-SVN: r253024
PR libstdc++/71500
* include/bits/regex_executor.tcc
(_Backref_matcher<BidIt, regex_traits<C>>::_M_apply): Use
std::__equal4 instead of C++14 4-iterator overloads of std::equal.
* include/bits/stl_algobase.h (__equal4): New functions implementing
4-iterator overloads of std::equal for use in C++11.
(equal(It1, It1, It2, It2), equal(It1, It1, It2, It2, BinaryPred)):
Move function bodies to new __equal4 functions.
* testsuite/28_regex/simple_c++11.cc: New.
From-SVN: r252981
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
PR libstdc++/71500
* include/bits/regex_executor.tcc: Support icase in regex_tratis<...>
for back reference matches.
* testsuite/28_regex/regression.cc: Test case.
From-SVN: r251982
* include/bits/hashtable_policy.h (_ReuseOrAllocNode): Remove
__value_alloc_type and __value_alloc_traits typedefs.
(_ReuseOrAllocNode::operator()): Call construct and destroy on the
node allocator.
(_Hashtable_alloc): Simplify __value_alloc_traits typedef.
(_Hashtable_alloc<_NodeAlloc>::_M_allocate_node(_Args&&...)): Call
construct on the node allocator.
(_Hashtable_alloc<_NodeAlloc>::_M_deallocate_node(__node_type*)): Call
destroy on the node allocator.
From-SVN: r251187
* include/bits/ios_base.h (ios_base::io_state, ios_base::open_mode)
(ios_base::seek_dir): Remove for C++17.
* include/std/streambuf (basic_streambuf::stossc): Remove for C++17.
Add deprecated attribute for C++11 and C++14.
* testsuite/27_io/types/1.cc: Don't run for C++17 and later.
* testsuite/27_io/types/4.cc: New.
From-SVN: r250531
PR libstdc++/81476
* include/bits/vector.tcc (vector::_M_range_insert<_InputIterator>):
Only insert elements one-by-one when inserting at the end.
* testsuite/performance/23_containers/insert/81476.cc: New.
From-SVN: r250366
* include/bits/uses_allocator.h (__use_alloc(const _Alloc&&)): Add
deleted overload to prevent dangling references to rvalues.
* include/experimental/memory_resource
(polymorphic_allocator::construct): Do not call __use_alloc with
rvalue arguments.
From-SVN: r250019
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
PR libstdc++/81002
* include/bits/regex.h (basic_regex): Adjust call to __compile_nfa
so iterator type is deduced.
* include/bits/regex_compiler.h (__compile_nfa): Reorder template
parameters to allow iterator type to be deduced.
* testsuite/28_regex/basic_regex/ctors/basic/iter.cc: New.
From-SVN: r248989
* include/bits/alloc_traits.h (__is_allocator, _RequireAllocator):
New trait and alias for detecting Allocator-like types.
* include/bits/basic_string.h (basic_string): Add deduction guide
from P0433.
* include/ext/alloc_traits.h (__gnu_cxx::__alloc_traits): Add template
parameter with default template argument that causes substitution
failures for types that cannot be allocators.
* testsuite/21_strings/basic_string/cons/char/deduction.cc: New.
* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc: New.
From-SVN: r248967
* include/bits/stl_iterator_base_funcs.h
(__advance<_RandomAccessIterator, _Distance>): Optimize for next/prev
cases where incrementing or decrementing a single step.
From-SVN: r248875
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
Jonathan Wakely