[PATCH] D48616: Implement LWG 2946, 3075 and 3076

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists updated this revision to Diff 153001.
mclow.lists added a comment.

Updated the `__is_allocator` type trait to work all the way back to C++03
Added a bunch of tests from issue2946.

I think this has all the pieces that it needs now.


https://reviews.llvm.org/D48616

Files:
  include/memory
  include/string
  test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
  test/std/strings/basic.string/string.cons/default_noexcept.pass.cpp
  test/std/strings/basic.string/string.cons/dtor_noexcept.pass.cpp
  test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp
  test/std/strings/basic.string/string.cons/move_assign_noexcept.pass.cpp
  test/std/strings/basic.string/string.cons/move_noexcept.pass.cpp
  test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
  test/std/strings/basic.string/string.cons/string_view_deduction.fail.cpp
  test/std/strings/basic.string/string.cons/string_view_deduction.pass.cpp
  test/std/strings/basic.string/string.cons/string_view_size_size_deduction.fail.cpp
  test/std/strings/basic.string/string.cons/string_view_size_size_deduction.pass.cpp
  test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
  test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
  test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
  test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
  test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
  test/std/strings/basic.string/string.nonmembers/string.special/swap_noexcept.pass.cpp
  test/std/strings/basic.string/string.ops/string_compare/size_size_string.pass.cpp
  test/std/strings/basic.string/string.ops/string_compare/string.pass.cpp
  test/std/strings/basic.string/string.ops/string_find.first.not.of/string_size.pass.cpp
  test/std/strings/basic.string/string.ops/string_find.first.of/string_size.pass.cpp
  test/std/strings/basic.string/string.ops/string_find.last.not.of/string_size.pass.cpp
  test/std/strings/basic.string/string.ops/string_find.last.of/string_size.pass.cpp
  test/std/strings/basic.string/string.ops/string_find/string_size.pass.cpp
  test/std/strings/basic.string/string.ops/string_rfind/string_size.pass.cpp

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