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

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists created this revision.
mclow.lists added reviewers: EricWF, ldionne, STL_MSFT.

A massive amount of doinking around in <string>.

  https://cplusplus.github.io/LWG/issue2946
  https://cplusplus.github.io/LWG/issue3075
  https://cplusplus.github.io/LWG/issue3076

This is not quite right yet, but I wanted to get it up here for people to look at.

I may have stepped on a bug fix for old versions of gcc in C++03 mode - Eric? [ was introduced in r292830 ]
Stephan - I updated your deduction guide tests now that we implement all of them.


https://reviews.llvm.org/D48616

Files:
  include/memory
  include/string
  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/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.nonmembers/string.special/swap_noexcept.pass.cpp

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