Add these constructors from C++11 which were missing from the COW
basic_string. Additionally simplify the definitions of the
basic_string::reference and basic_string::const_reference types as
required by C++11.
This allows filesystem::path::string<Allocator>() to be simplified, so
that the same code is used for both basic_string implementations.
* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
copy/move constructors for old std::basic_string.
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::reference, basic_string::const_reference): Define
as plain references for C++11 and later.
(basic_string::basic_string()): Put constructor body outside
preprocessor conditional groups.
(basic_string::basic_string(basic_string&&)): Move _Alloc_hider
instead of copying it.
(basic_string::basic_string(const basic_string&, const _Alloc&)):
Define.
(basic_string::basic_string(basic_string&&, const _Alloc&)):
Define.
* include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
cases for old basic_string.
* testsuite/21_strings/basic_string/cons/char/8.cc: Test
allocator-extended constructors unconditionally. Add extra members to
allocator type when using old string ABI.
* testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
for old string ABI.
* testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
From-SVN: r267584
2019-01-04 Jonathan Wakely <jwakely@redhat.com>
+ * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
+ copy/move constructors for old std::basic_string.
+ * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
+ (basic_string::reference, basic_string::const_reference): Define
+ as plain references for C++11 and later.
+ (basic_string::basic_string()): Put constructor body outside
+ preprocessor conditional groups.
+ (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
+ instead of copying it.
+ (basic_string::basic_string(const basic_string&, const _Alloc&)):
+ Define.
+ (basic_string::basic_string(basic_string&&, const _Alloc&)):
+ Define.
+ * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
+ cases for old basic_string.
+ * testsuite/21_strings/basic_string/cons/char/8.cc: Test
+ allocator-extended constructors unconditionally. Add extra members to
+ allocator type when using old string ABI.
+ * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
+ for old string ABI.
+ * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
+
* testsuite/23_containers/list/61347.cc: Avoid spurious failure when
-fno-inline added to test flags.
_ZNSt14collate_bynameI[cw]EC[12]ERKSs[jmy];
_ZNKSt8time_getI[cw]St19istreambuf_iteratorI[cw]St11char_traitsI[cw]EEE3getES3_S3_RSt8ios_baseRSt12_Ios_IostateP2tmcc;
+ _ZNSsC[12]ERKSsRKSaIcE;
+ _ZNSsC[12]EOSsRKSaIcE;
+ _ZNSbIwSt11char_traitsIwESaIwEEC[12]ERKS2_RKS1_;
+ _ZNSbIwSt11char_traitsIwESaIwEEC[12]EOS2_RKS1_;
+
} GLIBCXX_3.4.25;
# Symbols in the support library (libsupc++) have their own tag.
typedef _Alloc allocator_type;
typedef typename _CharT_alloc_type::size_type size_type;
typedef typename _CharT_alloc_type::difference_type difference_type;
+#if __cplusplus < 201103L
typedef typename _CharT_alloc_type::reference reference;
typedef typename _CharT_alloc_type::const_reference const_reference;
+#else
+ typedef value_type& reference;
+ typedef const value_type& const_reference;
+#endif
typedef typename _CharT_alloc_type::pointer pointer;
typedef typename _CharT_alloc_type::const_pointer const_pointer;
typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator;
basic_string()
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
_GLIBCXX_NOEXCEPT
- : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) { }
+ : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc())
#else
- : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc()){ }
+ : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc())
#endif
+ { }
/**
* @brief Construct an empty string using allocator @a a.
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
noexcept // FIXME C++11: should always be noexcept.
#endif
- : _M_dataplus(__str._M_dataplus)
+ : _M_dataplus(std::move(__str._M_dataplus))
{
#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
__str._M_data(_S_empty_rep()._M_refdata());
* @param __a Allocator to use (default is default allocator).
*/
basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc());
+
+ basic_string(const basic_string& __str, const _Alloc& __a)
+ : _M_dataplus(__str._M_rep()->_M_grab(__a, __str.get_allocator()), __a)
+ { }
+
+ basic_string(basic_string&& __str, const _Alloc& __a)
+ : _M_dataplus(__str._M_data(), __a)
+ {
+ if (__a == __str.get_allocator())
+ {
+#if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
+ __str._M_data(_S_empty_rep()._M_refdata());
+#else
+ __str._M_data(_S_construct(size_type(), _CharT(), __a));
+#endif
+ }
+ else
+ _M_dataplus._M_p = _S_construct(__str.begin(), __str.end(), __a);
+ }
#endif // C++11
/**
path::string(const _Allocator& __a) const
{
if constexpr (is_same_v<_CharT, value_type>)
- {
-#if _GLIBCXX_USE_CXX11_ABI
- return { _M_pathname, __a };
-#else
- if constexpr (is_same_v<_Allocator, string_type::allocator_type>)
- return _M_pathname;
- else
- return { _M_pathname, string_type::size_type(0), __a };
-#endif
- }
+ return { _M_pathname, __a };
else
return _S_str_convert<_CharT, _Traits>(_M_pathname, __a);
}
// <http://www.gnu.org/licenses/>.
// { dg-do run { target c++11 } }
-// COW strings don't support C++11 allocators:
-// { dg-require-effective-target cxx11-abi }
#include <string>
#include <testsuite_hooks.h>
bool moved_to;
bool moved_from;
+
+#if ! _GLIBCXX_USE_CXX11_ABI
+ // COW string doesn't use allocator_traits, requires C++03 allocator API.
+ using pointer = T*;
+ using const_pointer = const T*;
+ using difference_type = int;
+ template<typename U> struct rebind { using other = mv_allocator<U>; };
+ void construct(pointer p, const T& val) { ::new(p) T(val); }
+ void destroy(pointer p) { p->~T(); }
+ size_type max_size() const { return std::allocator<T>().max_size(); }
+#endif
};
template<typename T, typename U>
VERIFY( construct( lvalue.begin(), lvalue.end(), alloc ) == 6 );
VERIFY( construct( list{ 'l' , 'i' , 's', 't' } ) == 4 );
VERIFY( construct( list{ 'l', 'i', 's', 't' }, alloc ) == 4 );
-#if _GLIBCXX_USE_CXX11_ABI
VERIFY( construct( lvalue, alloc ) == 6 );
VERIFY( construct( string{"rvalue"}, alloc ) == 6 );
-#endif
}
int
VERIFY( construct( lvalue.begin(), lvalue.end(), alloc ) == 6 );
VERIFY( construct( list{ L'l' , L'i' , L's', L't' } ) == 4 );
VERIFY( construct( list{ L'l', L'i', L's', L't' }, alloc ) == 4 );
-#if _GLIBCXX_USE_CXX11_ABI
VERIFY( construct( lvalue, alloc ) == 6 );
VERIFY( construct( string{L"rvalue"}, alloc ) == 6 );
-#endif
}
int
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