Jonathan Wakely 6c2582c040 libstdc++: Fix view adaptors for mixed-const sentinels and iterators (PR 95322) ... The bug report is that transform_view's sentinel<false> cannot be compared to its iterator<true>. The comparison is supposed to use operator==(iterator<Const>, sentinel<Const>) after converting sentinel<false> to sentinel<true>. However, the operator== is a hidden friend so is not a candidate when comparing iterator<true> with sentinel<false>. The required conversion would only happen if we'd found the operator, but we can't find the operator until after the conversion happens. A new LWG issue has been reported, but not yet assigned a number. The solution suggested by Casey Carter is to make the hidden friends of the sentinel types work with iterators of any const-ness, so that no conversions are required. Patrick Palka observed that join_view has a similar problem and a similar fix is used for its sentinel. PR libstdc++/95322 * include/std/ranges (transform_view::_Sentinel): Allow hidden friends to work with _Iterator<true> and _Iterator<false>. (join_view::_Sentinel): Likewise. * testsuite/std/ranges/adaptors/95322.cc: New test.		2020-05-27 22:08:15 +01:00
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algorithm	libstdc++: Implement C++20 constrained algorithms	2020-02-06 20:08:34 -05:00
any	libstdc++: Fix constructor constraints for std::any (PR 90415)	2020-04-24 00:54:20 +01:00
array	Update copyright years.	2020-01-01 12:51:42 +01:00
atomic	libstdc++: Add missing feature test macros	2020-04-22 22:54:34 +01:00
bit	libstdc++ P1956R1 On the names of low-level bit manipulation functions	2020-02-17 17:09:18 +00:00
bitset	libstdc++: Add comparison operators to types from Utilities clause	2020-04-15 19:47:48 +01:00
charconv	libstdc++: Add comparison operators to <charconv> result types	2020-04-08 16:16:10 +01:00
chrono	libstdc++: Add comparison operators to <chrono> types	2020-04-18 00:47:45 +01:00
codecvt	Update copyright years.	2020-01-01 12:51:42 +01:00
complex	libstdc++: Add comparison operators to types from Numerics clause	2020-04-08 16:51:59 +01:00
concepts	libstdc++: Update __cpp_lib_concepts value	2020-04-22 22:54:34 +01:00
condition_variable	libstdc++: Update value of __cpp_lib_jthread macro	2020-04-22 22:54:34 +01:00
coroutine	coroutines: Fix handling of non-class coroutine returns [PR94759]	2020-04-28 02:07:37 +01:00
deque	libstdc++: Update __cpp_lib_erase_if macro (P1115R3)	2020-02-15 10:25:23 +00:00
execution	libstdc++: Define __cpp_lib_execution feature test macro	2020-04-22 22:54:35 +01:00
filesystem	Update copyright years.	2020-01-01 12:51:42 +01:00
forward_list	libstdc++: Update __cpp_lib_erase_if macro (P1115R3)	2020-02-15 10:25:23 +00:00
fstream	Update copyright years.	2020-01-01 12:51:42 +01:00
functional	libstdc++: Rename __cpp_lib_constexpr_invoke macro	2020-04-22 22:54:34 +01:00
future	libstdc++: Define and use chrono::is_clock for C++20	2020-03-25 22:07:02 +00:00
iomanip	Update copyright years.	2020-01-01 12:51:42 +01:00
ios	Update copyright years.	2020-01-01 12:51:42 +01:00
iosfwd	Update copyright years.	2020-01-01 12:51:42 +01:00
iostream	Update copyright years.	2020-01-01 12:51:42 +01:00
istream	Update copyright years.	2020-01-01 12:51:42 +01:00
iterator	Update copyright years.	2020-01-01 12:51:42 +01:00
limits	Update copyright years.	2020-01-01 12:51:42 +01:00
list	libstdc++: Update __cpp_lib_erase_if macro (P1115R3)	2020-02-15 10:25:23 +00:00
locale	Update copyright years.	2020-01-01 12:51:42 +01:00
map	Update copyright years.	2020-01-01 12:51:42 +01:00
memory	libstdc++: Add missing feature test macros	2020-04-22 22:54:34 +01:00
memory_resource	libstdc++: Add missing feature test macros	2020-04-22 22:54:34 +01:00
mutex	libstdc++: Define and use chrono::is_clock for C++20	2020-03-25 22:07:02 +00:00
numbers	Update copyright years.	2020-01-01 12:51:42 +01:00
numeric	libstdc++: P1645R1 constexpr for <numeric> algorithms	2020-02-26 10:23:17 -05:00
optional	libstdc++: Define <=> for tuple, optional and variant	2020-02-21 17:12:39 +00:00
ostream	Update copyright years.	2020-01-01 12:51:42 +01:00
queue	Update copyright years.	2020-01-01 12:51:42 +01:00
random	Update copyright years.	2020-01-01 12:51:42 +01:00
ranges	libstdc++: Fix view adaptors for mixed-const sentinels and iterators (PR 95322)	2020-05-27 22:08:15 +01:00
ratio	Update copyright years.	2020-01-01 12:51:42 +01:00
regex	Update copyright years.	2020-01-01 12:51:42 +01:00
scoped_allocator	libstdc++: Add comparison operators to types from Utilities clause	2020-04-15 19:47:48 +01:00
set	Update copyright years.	2020-01-01 12:51:42 +01:00
shared_mutex	libstdc++: Define and use chrono::is_clock for C++20	2020-03-25 22:07:02 +00:00
span	libstdc++: enable_view has false positives (LWG 3326)	2020-02-24 12:15:05 +00:00
sstream	Update copyright years.	2020-01-01 12:51:42 +01:00
stack	Update copyright years.	2020-01-01 12:51:42 +01:00
stdexcept	Update copyright years.	2020-01-01 12:51:42 +01:00
stop_token	libstdc++: Update value of __cpp_lib_jthread macro	2020-04-22 22:54:34 +01:00
streambuf	Update copyright years.	2020-01-01 12:51:42 +01:00
string	libstdc++: Update __cpp_lib_erase_if macro (P1115R3)	2020-02-15 10:25:23 +00:00
string_view	libstdc++: Fixes for feature test macros (PR 91480)	2020-04-28 23:40:18 +01:00
system_error	libstdc++: Define operator<=> for <system_error> types	2020-02-20 12:27:48 +00:00
thread	libstdc++: Define and use chrono::is_clock for C++20	2020-03-25 22:07:02 +00:00
tuple	libstdc++: Fixes for feature test macros (PR 91480)	2020-04-28 23:40:18 +01:00
type_traits	libstdc++: Replace reserved identifier _T with _Tp (PR 94901)	2020-05-01 13:41:02 +01:00
typeindex	libstdc++: Add spaceship operator to std::type_index	2020-04-15 19:47:47 +01:00
unordered_map	Update copyright years.	2020-01-01 12:51:42 +01:00
unordered_set	Update copyright years.	2020-01-01 12:51:42 +01:00
utility	libstdc++: Do not define __cpp_lib_constexpr_algorithms in <utility>	2020-04-22 22:54:35 +01:00
valarray	Update copyright years.	2020-01-01 12:51:42 +01:00
variant	libstdc++: Define <=> for tuple, optional and variant	2020-02-21 17:12:39 +00:00
vector	libstdc++: Update __cpp_lib_erase_if macro (P1115R3)	2020-02-15 10:25:23 +00:00
version	Implent C++20 std::atomic_flag::test	2020-05-12 07:37:09 +02:00