[Bug libstdc++/60271] [C++1y] std::max(initializer_list<T>) cannot use std::max_element

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60271

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Dec 22 16:00:16 2014
New Revision: 219015

URL: https://gcc.gnu.org/viewcvs?rev=219015&root=gcc&view=rev
Log:
2014-12-22  Ville Voutilainen  <ville.voutilainen@gmail.com>

    PR libstdc++/60271
    C++14 constexpr min, max, minmax, min_element, max_element
    and minmax_element. Also constexpr for 20.9.5-20.9.9,
    aka various library functors.
    * include/bits/c++config: Add _GLIBCXX14_CONSTEXPR.
    * include/bits/algorithmfwd.h (min, max, minmax, min_element,
    max_element): Use it.
    * include/bits/predefined_ops.h (_Iter_less_iter, __iter_less_iter,
    _Iter_comp_iter, __iter_comp_iter): Likewise.
    * include/bits/stl_algo.h (minmax, __minmax_element, minmax_element,
    min, max, __min_element, min_element, __max_element, max_element)
    Likewise.
    * include/bits/stl_algobase.h (min, max): Likewise.
    * include/bits/stl_function.h (plus, minus, multiplies, divides,
    modulus, negate, equal_to, not_equal_to, greater, less, greater_equal,
    less_equal, logical_and, logical_or, logical_not, bit_and, bit_or,
    bit_xor, bit_not, unary_negate, not1, binary_negate, not2): Likewise.
    * testsuite/20_util/function_objects/constexpr.cc: New.
    * testsuite/25_algorithms/max/constexpr.cc: Likewise.
    * testsuite/25_algorithms/max_element/constexpr.cc: Likewise.
    * testsuite/25_algorithms/min/constexpr.cc: Likewise.
    * testsuite/25_algorithms/min_element/constexpr.cc: Likewise.
    * testsuite/25_algorithms/minmax/constexpr.cc: Likewise.
    * testsuite/25_algorithms/minmax_element/constexpr.cc: Likewise.
    * testsuite/ext/profile/mutex_extensions_neg.cc: Adjust dg-error.

Added:
    trunk/libstdc++-v3/testsuite/20_util/function_objects/constexpr.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/max/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/max_element/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/min/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/min_element/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/minmax/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
    trunk/libstdc++-v3/testsuite/25_algorithms/minmax_element/constexpr.cc
      - copied, changed from r219014,
trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/algorithmfwd.h
    trunk/libstdc++-v3/include/bits/c++config
    trunk/libstdc++-v3/include/bits/predefined_ops.h
    trunk/libstdc++-v3/include/bits/stl_algo.h
    trunk/libstdc++-v3/include/bits/stl_algobase.h
    trunk/libstdc++-v3/include/bits/stl_function.h
    trunk/libstdc++-v3/testsuite/ext/profile/mutex_extensions_neg.cc