[PATCH] D30045: Remove `std::random_shuffle` in C++17

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists created this revision.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4190  removed `random_shuffle` from C++1z. (and other stuff)

Wrap all the random_shuffle bits in an #ifdef so they disappear when compiling with `-std=c++1z` or later.

Introduce a new configuration option, `_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE` which allows user code to continue using `random_shuffle` in C++1z mode if desired.

Add a test for `_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE`, and mark all the rest of the `random_shuffle` tests to XFAIL for c++1z


https://reviews.llvm.org/D30045

Files:
  include/algorithm
  test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.cxx1z.pass.cpp
  test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp
  test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_rand.pass.cpp

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