Whitespace maintenance. Remove a bunch of tabs that snuck in. No functionality change

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220142 91177308-0d34-0410-b5e6-96231b3b80d8
Fix unused variables in tests to placate scan-build. Patch from Steve MacKenzie.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220154 91177308-0d34-0410-b5e6-96231b3b80d8
[libcxx] Redo adding support for building and testing with an ABI library not along linker paths

Summary:
This is the second attempt at allowing for the use of libraries that the linker cannot find. The first attempt used `CMAKE_LIBRARY_PATH` and `find_library` to select which ABI library should be used. There were a number of problems with this approach:

- `find_library` didn't work with cmake targets (ie in-tree libcxxabi build)
- It wasn't always possible to determine where `find_library` actually found your library.
- `target_link_libraries` inserted the path of the ABI library into libc++'s RPATH when `find_library` was used.
- Linking libc++ and it's ABI library is a special case. It's a lot easier to keep it simple. 

After discussion with @cbergstrum a new approach was decided upon.
This patch achieve the same ends by simply using `LIBCXX_CXX_ABI_LIBRARY_PATH` to specify where to find the library (if the linker won't find it). When this variable is defined it is simply added as a library search path when linking libc++. It is a lot easier to duplicate this behavior in LIT. It also prevents libc++ from being linked with an RPATH.






Reviewers: mclow.lists, cbergstrom, chandlerc, danalbert

Reviewed By: chandlerc, danalbert

Subscribers: chandlerc, cfe-commits

Differential Revision: http://reviews.llvm.org/D5860

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220157 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead buildbot link

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220260 91177308-0d34-0410-b5e6-96231b3b80d8
LWG #2212 (not yet adopted) mandates that tuple_size/tuple_element are available if <array> or <utility> are included (not just <tuple>). We already do this. Add some tests to make sure that this remains true.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220295 91177308-0d34-0410-b5e6-96231b3b80d8
Some tests used __typeof__ instead of decltype. Replace these usages.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220296 91177308-0d34-0410-b5e6-96231b3b80d8
Add -ldl to libc++ tests when sanitizers are used.

Clang 3.6 no longer links the sanitizer runtime library dependancies when
-nodefaultlibs is used. This patch manually links in a missing dependancy.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220463 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a couple of failing tests for C++03 by checking for rvalue reference support first.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220465 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for "fancy" pointers to shared_ptr. Fixes PR20616

Summary:
This patch add support for "fancy pointers/allocators" as well as fixing support for shared_pointer and "minimal" allocators.

Fancy pointers are class types that meet the NullablePointer requirements. In our case they are created by fancy allocators. `support/min_allocator.h` is an archetype for these types.

There are three types of changes made in this patch:
1. `_Alloc::template rebind<T>::other` -> `__allocator_traits_rebind<_Alloc, T>::type`. This change was made because allocators don't need a rebind template. `__allocator_traits_rebind` is used instead of `allocator_traits::rebind` because use of `allocator_traits::rebind` requires a workaround for when template aliases are unavailable.
2. `a.deallocate(this, 1)` -> `a.deallocate(pointer_traits<self>::pointer_to(*this), 1)`. This change change is made because fancy pointers aren't always constructible from raw pointers. 
3. `p.get()` -> `addressof(*p.get())`. Fancy pointers aren't actually a pointer. When we need a "real" pointer we take the address of dereferencing the fancy pointer. This should give us the actual raw pointer.

Test Plan: Tests were added using `support/min_allocator.h` to each affected shared_ptr overload and creation function. These tests can only be executed in C++11 or greater since min_allocator is only available then. A extra test was added for the non-variadic versions of allocate_shared. 

Reviewers: danalbert, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4859

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220469 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for "fancy" pointers to promise and packaged_task.

Summary:
This patch is very closely related to D4859. Please see http://reviews.llvm.org/D4859 for more information.

This patch adds support for "fancy" pointers and allocators to promise and packaged_task. The changes made to support this are exactly the same as in D4859.



Test Plan: "fancy" pointer tests were added to each constructor affected by the change.

Reviewers: danalbert, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4862

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220471 91177308-0d34-0410-b5e6-96231b3b80d8
Make headers available in the build directory

This essentially re-does r194825 and makes it possible to run clang
with libc++ without having to install it, even if you don't have any
version of libc++ installed in /usr/.

This behaviour broke in r210577/r211629, which fixed pr18681.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220489 91177308-0d34-0410-b5e6-96231b3b80d8
Only link tests against -ldl on linux

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220510 91177308-0d34-0410-b5e6-96231b3b80d8
[libcxx] XFAIL all currently failing libc++ tests for linux.

Summary:
Pretty please? We now have a significant number of builders that test libc++. I really want those builders to be green.
Most of these failures are due to differences in locale data, including those in regex. I will continue working on fixing the locale and regex tests but there is no consensus on what the correct direction to go. 

Since the builders display a list of XFAIL tests they are by no means hidden. It just means they are expected failures. Now unexpected failures won't get mixed in with well known and expected failures.

Reviewers: mclow.lists, jroelofs, danalbert

Reviewed By: danalbert

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5941

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220512 91177308-0d34-0410-b5e6-96231b3b80d8
Change uses of `sys.platform == 'linux2' to `sys.platform.startswith('linux')

Although the current method is valid up till python 3.3 (which is not supported)
this seems to be a clearer way of checking for linux and moves the tests towards
python 3 compatibility.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220534 91177308-0d34-0410-b5e6-96231b3b80d8
Change the comment on the closing #endif to match the condition on the corresponding #ifdef. Thanks to K-ballo for the catch. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220647 91177308-0d34-0410-b5e6-96231b3b80d8
PR #21321 talked about implementation-defined behavior of realloc. I poo-poohed it, and was wrong. Fix the call in <locale>. Review the others, refactored some duplicated code, and found overflow bugs (and __event_cap_ was never getting updated, either).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220702 91177308-0d34-0410-b5e6-96231b3b80d8
[libcxx] Fix use of operator comma where the types can be user defined

Summary:
An evil user might overload operator comma. Use a void cast to make sure any user overload is not selected.
Modify all the test iterators to define operator comma. 

Reviewers: danalbert, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5929

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220706 91177308-0d34-0410-b5e6-96231b3b80d8
[libcxx] Remove use of uniform initialization from regex tests so that they compile in C++03.

Reviewers: danalbert, jroelofs, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5957

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220707 91177308-0d34-0410-b5e6-96231b3b80d8
Fix use of operator comma in is_permutation and delete comma operator for test iterators.

The comma operators in the test iterators give better error messages when they
are deleted as opposed to not defined. Delete these functions when possible.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220715 91177308-0d34-0410-b5e6-96231b3b80d8
[libcxx] use clang's __char16_t and __char32_t definitions on Linux in C++03 mode.

Summary: This fixes ODR violations in C++03 mode in test/localization/locale.stdcvt. The special case for linux was introduced in 2010 before clang always defined __char16_t and __char32_t.

Reviewers: mclow.lists, danalbert, jroelofs, EricWF

Reviewed By: EricWF

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5930

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220716 91177308-0d34-0410-b5e6-96231b3b80d8