Commit Graph

43 Commits

Author SHA1 Message Date
Louis Dionne 2b0c7abba3 [libc++] Declare std::tuple_element as struct instead of class
Similarly to https://reviews.llvm.org/rL350972, this revision changes
std::tuple_element from class to struct.

Fixes PR41331.
Thanks to Jan Wilken Dörrie for the patch.

Differential Revision: https://reviews.llvm.org/D60069

llvm-svn: 357411
2019-04-01 16:39:34 +00:00
Marshall Clow 9ea0e473f0 Mark 'front()' and 'back()' as noexcept for array/deque/string/string_view. These are just rebranded 'operator[]', and should be noexcept like it is.
llvm-svn: 356435
2019-03-19 03:30:07 +00:00
Marshall Clow 5f6a5ac19c Add noexcept to operator[] for array and deque. This is an extension. We already do this for string and string_view. This should give better codegen inside of noexcept functions.
llvm-svn: 356209
2019-03-14 21:56:57 +00:00
Chandler Carruth 57b08b0944 Update more file headers across all of the LLVM projects in the monorepo
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351648
2019-01-19 10:56:40 +00:00
Marshall Clow e495760140 Change from a to a . Fixes PR#39871.
llvm-svn: 350972
2019-01-11 21:57:12 +00:00
Marshall Clow f56972e224 Implement the infrastructure for feature-test macros. Very few actual feature test macros, though. Reviewed as: https://reviews.llvm.org/D51955
llvm-svn: 342073
2018-09-12 19:41:40 +00:00
Marshall Clow 07d8ac0ab5 Implement P1023: constexpr comparison operators for std::array
llvm-svn: 338668
2018-08-02 02:11:06 +00:00
Marshall Clow 0ca8c0895c Implement deduction guides for <array>; Reviewed as https://reviews.llvm.org/D46964
llvm-svn: 332768
2018-05-18 21:01:04 +00:00
Eric Fiselier 1a78ae3c89 Fix size and alignment of array<T, 0>.
An array T[1] isn't necessarily the same say when it's
a member of a struct. This patch addresses that problem and corrects
the tests to deal with it.

llvm-svn: 324545
2018-02-07 23:50:25 +00:00
Eric Fiselier 59cdf90ac8 [libc++] Fix PR35491 - std::array of zero-size doesn't work with non-default constructible types.
Summary:
This patch fixes llvm.org/PR35491 and LWG2157  (https://cplusplus.github.io/LWG/issue2157)

The fix attempts to maintain ABI compatibility by replacing the array with a instance of `aligned_storage`.

Reviewers: mclow.lists, EricWF

Reviewed By: EricWF

Subscribers: lichray, cfe-commits

Differential Revision: https://reviews.llvm.org/D41223

llvm-svn: 324526
2018-02-07 21:06:13 +00:00
Nirav Dave 936ff58476 Revert "[libc++] Fix PR35491 - std::array of zero-size doesn't work with non-default constructible types."
Revert "Fix initialization of array<const T, 0> with GCC."
Revert "Make array<const T, 0> non-CopyAssignable and make swap and fill ill-formed."

This reverts commit r324182, r324185, and r324194 which were causing issues with zero-length std::arrays.

llvm-svn: 324309
2018-02-06 03:03:37 +00:00
Eric Fiselier c6b3c7bb63 Fix initialization of array<const T, 0> with GCC.
Previously, when handling zero-sized array of const objects we
used a const version of aligned_storage_t, which is not an array type.
However, GCC complains about initialization of the form: array<const T, 0> arr = {};

This patch fixes that bug by making the dummy object used to represent
the zero-sized array an array itself. This avoids GCC's complaints
about the uninitialized const member.

llvm-svn: 324194
2018-02-04 08:02:35 +00:00
Eric Fiselier 192622dc49 Make array<const T, 0> non-CopyAssignable and make swap and fill ill-formed.
The standard isn't exactly clear how std::array should handle zero-sized arrays
with const element types. In particular W.R.T. copy assignment, swap, and fill.

This patch takes the position that those operations should be ill-formed,
and makes changes to libc++ to make it so.

This follows up on commit r324182.

llvm-svn: 324185
2018-02-04 02:17:02 +00:00
Eric Fiselier afeda5c251 [libc++] Fix PR35491 - std::array of zero-size doesn't work with non-default constructible types.
Summary:
This patch fixes llvm.org/PR35491 and LWG2157  (https://cplusplus.github.io/LWG/issue2157)

The fix attempts to maintain ABI compatibility by replacing the array with a instance of `aligned_storage`.

Reviewers: mclow.lists, EricWF

Reviewed By: EricWF

Subscribers: lichray, cfe-commits

Differential Revision: https://reviews.llvm.org/D41223

llvm-svn: 324182
2018-02-04 01:03:08 +00:00
Marshall Clow 72c8fad427 First part of P0600 - '[[nodiscard] in the standard library'. Mark the 'empty()' methods of all the containers as nodiscard. If you're calling empty() w/o looking at the result, you probably meanto to call 'clear()'. c++2a only
llvm-svn: 318269
2017-11-15 05:51:26 +00:00
Marshall Clow 6db379a2c8 [array.tuple]/1 says that instantiating tuple_element<N, array<T, M>> is ill-formed if N >= M. We didn't do that. Add a static_assert to cause a failure, and a test that checks that we failed
llvm-svn: 305191
2017-06-12 14:41:37 +00:00
Eric Fiselier a016efb1dc [Libc++] Use #pragma push_macro/pop_macro to better handle min/max on Windows
Summary:
This patch improves how libc++ handles min/max macros within the headers. Previously libc++ would undef them and emit a warning.
This patch changes libc++ to use `#pragma push_macro`  to save the macro before undefining it, and `#pragma pop_macro` to restore the macros and the end of the header.

Reviewers: mclow.lists, bcraig, compnerd, EricWF

Reviewed By: EricWF

Subscribers: cfe-commits, krytarowski

Differential Revision: https://reviews.llvm.org/D33080

llvm-svn: 304357
2017-05-31 22:07:49 +00:00
Eric Fiselier 208156e88b Replace _LIBCPP_HAS_NO_<C++03 feature> with _LIBCPP_CXX03_LANG in <array>
llvm-svn: 300412
2017-04-16 02:50:40 +00:00
Marshall Clow e78269506f Implement the missing constexpr stuff in <array>. Fixes PR#31645.
llvm-svn: 292091
2017-01-16 03:02:10 +00:00
Eric Fiselier e2f2d1edef [NFC] Rename _LIBCPP_TYPE_VIS_ONLY to _LIBCPP_TEMPLATE_VIS
The name _LIBCPP_TYPE_VIS_ONLY is no longer accurate because both
_LIBCPP_TYPE_VIS and _LIBCPP_TYPE_VIS_ONLY expand to
__attribute__((__type_visibility__)) with Clang. The only remaining difference
is that _LIBCPP_TYPE_VIS_ONLY can be applied to templates whereas
_LIBCPP_TYPE_VIS cannot (due to dllimport/dllexport not being allowed on
templates).

This patch renames _LIBCPP_TYPE_VIS_ONLY to _LIBCPP_TEMPLATE_VIS.

llvm-svn: 291035
2017-01-04 23:56:00 +00:00
Marshall Clow 020b623a3b Implement the last bit of P0031: 'A Proposal to Add Constexpr Modifiers to reverse_iterator, move_iterator, array and Range Access' for C++17
llvm-svn: 290976
2017-01-04 17:58:17 +00:00
Marshall Clow d437fa5c8c Add an _LIBCPP_NORETURN inline function named __throw_XXX for each exception type we define. They either construct and throw the exception, or abort() (if exceptions are disabled). Use these functions everywhere instead of assert()ing when exceptions are disabled. WARNING: This is a behavior change - but only with exceptions disabled. Reviewed as: https://reviews.llvm.org/D23855.
llvm-svn: 279744
2016-08-25 15:09:01 +00:00
Eric Fiselier f07dd8d0a9 Add is_swappable/is_nothrow_swappable traits
llvm-svn: 267079
2016-04-21 23:38:59 +00:00
Marshall Clow ee66eb1328 non-member swap for array was mistakenly taking const ref params. Fixed and added test. Thanks to Ben Craig for the catch
llvm-svn: 262866
2016-03-07 21:57:10 +00:00
Eric Fiselier 545b8861fc [libcxx] LWG2485: get() should be overloaded for const tuple&&. Patch from K-Ballo.
Review: http://reviews.llvm.org/D14839
llvm-svn: 255941
2015-12-18 00:36:55 +00:00