[all-commits] [llvm/llvm-project] c90dee: [libc++] Re-apply fdc41e11f (LWG1203) without brea...

[Louis Dionne via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c90dee1e90045feb039be640864f038eebd1d8cd
      https://github.com/llvm/llvm-project/commit/c90dee1e90045feb039be640864f038eebd1d8cd
  Author: Louis Dionne <ldionne at apple.com>
  Date:   2020-09-23 (Wed, 23 Sep 2020)

  Changed paths:
    M libcxx/include/istream
    M libcxx/include/ostream
    A libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/not_istreamable.verify.cpp
    M libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/rvalue.pass.cpp
    R libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/CharT_pointer.pass.cpp
    A libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/not_ostreamable.verify.cpp
    A libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/rvalue.pass.cpp
    M libcxx/www/cxx2a_status.html

  Log Message:
  -----------
  [libc++] Re-apply fdc41e11f (LWG1203) without breaking the C++11 build

fdc41e11f was reverted in e46c1def5 because it broke the C++11 build.
We shouldn't be using enable_if_t in C++11, instead we must use
enable_if<...>::type.