251c629117
Fix warnings about pessimizing return moves for C++11 and higher
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Summary:
Throughout the libc++ headers, there are a few instances where
_VSTD::move() is used to return a local variable. Howard commented in
r189039 that these were there "for non-obvious reasons such as to help
things limp along in C++03 language mode".
However, when compiling these headers with warnings on, and in C++11 or
higher mode (like we do in FreeBSD), they cause the following complaints
about pessimizing moves:
In file included from tests.cpp:26:
In file included from tests.hpp:29:
/usr/include/c++/v1/map:1368:12: error: moving a local object in a return statement prevents copy elision [-Werror,-Wpessimizing-move]
return _VSTD::move(__h); // explicitly moved for C++03
^
/usr/include/c++/v1/__config:368:15: note: expanded from macro '_VSTD'
#define _VSTD std::_LIBCPP_NAMESPACE
^
Attempt to fix this by adding a _LIBCPP_EXPLICIT_MOVE() macro to
__config, which gets defined to _VSTD::move for pre-C++11, and to
nothing for C++11 and later.
I am not completely satisfied with the macro name (I also considered
_LIBCPP_COMPAT_MOVE and some other variants), so suggestions are
welcome. :)
Reviewers: mclow.lists, howard.hinnant, EricWF
Subscribers: arthur.j.odwyer, cfe-commits
Differential Revision: http://reviews.llvm.org/D11394
llvm-svn: 245421
2015-08-19 06:43:33 +00:00
2decfad7c5
Fix warnings in array and assoc containers
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llvm-svn: 242629
2015-07-18 23:56:04 +00:00
e3fbe1433b
Implement the first part of N4258: 'Cleaning up noexcept in the Library'. This patch deals with swapping containers, and implements a more strict noexcept specification (a conforming extension) than the standard mandates.
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llvm-svn: 242056
2015-07-13 20:04:56 +00:00
1f508014df
In many places, there was an #ifdef/#else block that selected one of two implmentations of rebind_alloc based on whether or not we had template aliases. Create a helper struct to encapsulate that bit of logic, and replace all the ifdefs with uses of that struct. No functionality change intented.
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llvm-svn: 234296
2015-04-07 05:21:38 +00:00
a3175bab88
Fix another -Wunused-local-typedef warning in include/__tree.
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The _Pp typedef in __tree<_Tp, _Compare, _Allocator>::__count_multi()
isn't used anywhere, so adding _LIBCPP_UNUSED is unecessary.
Differential Revision: http://reviews.llvm.org/D8140
llvm-svn: 231705
2015-03-09 21:39:02 +00:00
b3be398c67
Allow declaration of map and multimap iterator with incomplete mapped type. Patch from eugenis
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llvm-svn: 231119
2015-03-03 20:10:01 +00:00
7c78beac5d
Remove several unused forward declarations. Fixes PR22605.
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llvm-svn: 229728
2015-02-18 19:28:35 +00:00
d5f461ca03
Fix PR22366. When move-constructing an associative container and explicitly passing an allocator that compares different, we were not calling the destructor of the elements in the moved-from container.
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llvm-svn: 227359
2015-01-28 19:54:25 +00:00
ec959d5f46
Remove node from a container before destroying it. Thanks to Alexander Potapenko for pointing this out.
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llvm-svn: 206024
2014-04-11 08:22:42 +00:00
179b1f8cf2
Zhihao Yuan noted that there were a few unneeded statements. Eliminated the unnecessary ones, and commented the ones that are there for non-obvious reasons such as to help things limp along in C++03 language mode.
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llvm-svn: 189039
2013-08-22 18:29:50 +00:00
f0544c2086
Nico Rieck: this patch series fixes visibility issues on Windows as explained in < http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-August/031214.html >.
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llvm-svn: 188192
2013-08-12 18:38:34 +00:00
2472b928d2
N3644 tests for map/multimap/set/multiset. Drive-by NOEXCEPT for __tree_const_iterator constructor. Fix comment typos in other tests
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llvm-svn: 188019
2013-08-08 21:52:50 +00:00
07d3eccd26
Implement full support for non-pointer types in custom allocators. This is for the associative containers only. This work still needs to be done on the unordered and sequence containers. Fixes http://llvm.org/bugs/show_bug.cgi?id=15978
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llvm-svn: 184358
2013-06-19 21:29:40 +00:00
6e41256f68
No functionality change at this time. I've split _LIBCPP_VISIBLE up into two flags: _LIBCPP_TYPE_VIS and _LIBCPP_FUNC_VIS. This is in preparation for taking advantage of clang's new __type_visibility__ attribute.
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llvm-svn: 176593
2013-03-06 23:30:19 +00:00
aeb85680fb
Dimitry Andric: many visibility fixes. Howard: Much appreciated. Can you send me a patch to CREDITS.TXT?
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llvm-svn: 163862
2012-09-14 00:39:16 +00:00
c003db1fca
Further macro protection by replacing _[A-Z] with _[A-Z]p
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llvm-svn: 145410
2011-11-29 18:15:50 +00:00
073458b1ab
Windows support by Ruben Van Boxem.
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llvm-svn: 142235
2011-10-17 20:05:10 +00:00
ce48a1137d
_STD -> _VSTD to avoid macro clash on windows
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llvm-svn: 134190
2011-06-30 21:18:19 +00:00
ce53420e37
Provide names for template and function parameters in forward declarations. The purpose is to aid automated documentation tools.
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llvm-svn: 133008
2011-06-14 19:58:17 +00:00
e691351098
Made more implementation details of [multi]map/set noexcept.
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llvm-svn: 132642
2011-06-04 17:10:24 +00:00
1052ee39cb
noexcept for <map>.
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llvm-svn: 132639
2011-06-04 14:31:57 +00:00
6c38001ec5
Qualify calls to std::next(), to avoid conflicts with
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libraries/applications that define their own 'next' template.
llvm-svn: 130511
2011-04-29 16:20:26 +00:00
dbe14303da
Chris Jefferson submitted this patch to fix http://llvm.org/bugs/show_bug.cgi?id=9351
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llvm-svn: 128796
2011-04-03 20:05:29 +00:00
8f934e42d8
http://llvm.org/bugs/show_bug.cgi?id=9444
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llvm-svn: 127412
2011-03-10 17:27:57 +00:00
72c5e14203
Qualify calls to addressof with std::. Bug 9106
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llvm-svn: 124726
2011-02-02 17:36:20 +00:00
412dbebe1b
license change
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llvm-svn: 119395
2010-11-16 22:09:02 +00:00
f5ab703f68
visibility-decoration.
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llvm-svn: 114470
2010-09-21 20:16:37 +00:00
7609c9b665
Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature.
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llvm-svn: 113086
2010-09-04 23:28:19 +00:00
b3371f6f49
Fixing whitespace problems
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llvm-svn: 111750
2010-08-22 00:02:43 +00:00
54b409fdb9
now works with -fno-exceptions and -fno-rtti
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llvm-svn: 110828
2010-08-11 17:04:31 +00:00
5b08a8a432
Wiped out some non-ascii characters that snuck into the copyright.
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llvm-svn: 103516
2010-05-11 21:36:01 +00:00
3e519524c1
libcxx initial import
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llvm-svn: 103490
2010-05-11 19:42:16 +00:00
Dimitry Andric