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[d.j.a.y] Jerome Blanchi c14c8d 
# ===========================================================================
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#   http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
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#
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# DESCRIPTION
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#
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#   Check for baseline language coverage in the compiler for the specified
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#   version of the C++ standard.  If necessary, add switches to CXXFLAGS to
[d.j.a.y] Jerome Blanchi c14c8d 
#   enable support.  VERSION may be '11' (for the C++11 standard) or '14'
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#   (for the C++14 standard).
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#
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#   The second argument, if specified, indicates whether you insist on an
[d.j.a.y] Jerome Blanchi c14c8d 
#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
[d.j.a.y] Jerome Blanchi c14c8d 
#   -std=c++11).  If neither is specified, you get whatever works, with
[d.j.a.y] Jerome Blanchi c14c8d 
#   preference for an extended mode.
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#
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#   The third argument, if specified 'mandatory' or if left unspecified,
[d.j.a.y] Jerome Blanchi c14c8d 
#   indicates that baseline support for the specified C++ standard is
[d.j.a.y] Jerome Blanchi c14c8d 
#   required and that the macro should error out if no mode with that
[d.j.a.y] Jerome Blanchi c14c8d 
#   support is found.  If specified 'optional', then configuration proceeds
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#   regardless, after defining HAVE_CXX${VERSION} if and only if a
[d.j.a.y] Jerome Blanchi c14c8d 
#   supporting mode is found.
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#
[d.j.a.y] Jerome Blanchi c14c8d 
# LICENSE
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#
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com></bkoz@redhat.com>
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com></zackw@panix.com>
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu></roystgnr@ices.utexas.edu>
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com></sokolov@google.com>
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2015 Paul Norman <penorman@mac.com></penorman@mac.com>
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu></moritz@klammler.eu>
[d.j.a.y] Jerome Blanchi c14c8d 
#
[d.j.a.y] Jerome Blanchi c14c8d 
#   Copying and distribution of this file, with or without modification, are
[d.j.a.y] Jerome Blanchi c14c8d 
#   permitted in any medium without royalty provided the copyright notice
[d.j.a.y] Jerome Blanchi c14c8d 
#   and this notice are preserved.  This file is offered as-is, without any
[d.j.a.y] Jerome Blanchi c14c8d 
#   warranty.
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[d.j.a.y] Jerome Blanchi c14c8d 
#serial 1
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[d.j.a.y] Jerome Blanchi c14c8d 
dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
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dnl  (serial version number 13).
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[d.j.a.y] Jerome Blanchi c14c8d 
AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
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  m4_if([$1], [11], [],
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        [$1], [14], [],
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        [$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
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        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
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  m4_if([$2], [], [],
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        [$2], [ext], [],
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        [$2], [noext], [],
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        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
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  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
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        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
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        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
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        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
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  AC_LANG_PUSH([C++])dnl
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  ac_success=no
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  AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
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  ax_cv_cxx_compile_cxx$1,
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  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
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    [ax_cv_cxx_compile_cxx$1=yes],
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    [ax_cv_cxx_compile_cxx$1=no])])
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  if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
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    ac_success=yes
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  fi
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  m4_if([$2], [noext], [], [dnl
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  if test x$ac_success = xno; then
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    for switch in -std=gnu++$1 -std=gnu++0x; do
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      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
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      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
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                     $cachevar,
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        [ac_save_CXXFLAGS="$CXXFLAGS"
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         CXXFLAGS="$CXXFLAGS $switch"
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         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
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          [eval $cachevar=yes],
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          [eval $cachevar=no])
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         CXXFLAGS="$ac_save_CXXFLAGS"])
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      if eval test x\$$cachevar = xyes; then
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        CXXFLAGS="$CXXFLAGS $switch"
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        ac_success=yes
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        break
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      fi
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    done
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  fi])
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[d.j.a.y] Jerome Blanchi c14c8d 
  m4_if([$2], [ext], [], [dnl
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  if test x$ac_success = xno; then
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    dnl HP's aCC needs +std=c++11 according to:
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    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
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    dnl Cray's crayCC needs "-h std=c++11"
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    for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
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      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
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      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
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                     $cachevar,
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        [ac_save_CXXFLAGS="$CXXFLAGS"
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         CXXFLAGS="$CXXFLAGS $switch"
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         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
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          [eval $cachevar=yes],
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          [eval $cachevar=no])
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         CXXFLAGS="$ac_save_CXXFLAGS"])
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      if eval test x\$$cachevar = xyes; then
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        CXXFLAGS="$CXXFLAGS $switch"
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        ac_success=yes
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        break
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      fi
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    done
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  fi])
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  AC_LANG_POP([C++])
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  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
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    if test x$ac_success = xno; then
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      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
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    fi
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  else
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    if test x$ac_success = xno; then
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      HAVE_CXX$1=0
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      AC_MSG_NOTICE([No compiler with C++$1 support was found])
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    else
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      HAVE_CXX$1=1
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      AC_DEFINE(HAVE_CXX$1,1,
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                [define if the compiler supports basic C++$1 syntax])
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    fi
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    AC_SUBST(HAVE_CXX$1)
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  fi
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])
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[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
dnl  Test body for checking C++11 support
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m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
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  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
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)
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[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
dnl  Test body for checking C++14 support
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m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
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  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
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  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
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)
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[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
dnl  Tests for new features in C++11
[d.j.a.y] Jerome Blanchi c14c8d
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m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
// If the compiler admits that it is not ready for C++11, why torture it?
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// Hopefully, this will speed up the test.
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[d.j.a.y] Jerome Blanchi c14c8d 
#ifndef __cplusplus
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[d.j.a.y] Jerome Blanchi c14c8d 
#error "This is not a C++ compiler"
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[d.j.a.y] Jerome Blanchi c14c8d 
#elif __cplusplus < 201103L
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#error "This is not a C++11 compiler"
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[d.j.a.y] Jerome Blanchi c14c8d 
#else
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[d.j.a.y] Jerome Blanchi c14c8d 
namespace cxx11
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{
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_static_assert
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  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template <typename t=""></typename>
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    struct check
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    {
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      static_assert(sizeof(int) <= sizeof(T), "not big enough");
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    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_final_override
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    struct Base
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      virtual void f() {}
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    struct Derived : public Base
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    {
[d.j.a.y] Jerome Blanchi c14c8d 
      virtual void f() override {}
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    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_double_right_angle_brackets
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct check {};
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    typedef check<void> single_type;</void>
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    typedef check<check<void>> double_type;</check<void>
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    typedef check<check<check<void>>> triple_type;</check<check<void>
[d.j.a.y] Jerome Blanchi c14c8d 
    typedef check<check<check<check<void>>>> quadruple_type;</check<check<check<void>
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_decltype
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    f()
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    {
[d.j.a.y] Jerome Blanchi c14c8d 
      int a = 1;
[d.j.a.y] Jerome Blanchi c14c8d 
      decltype(a) b = 2;
[d.j.a.y] Jerome Blanchi c14c8d 
      return a + b;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_type_deduction
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T1, typename T2 >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct is_same
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static const bool value = false;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct is_same<t, t=""></t,>
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static const bool value = true;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T1, typename T2 >
[d.j.a.y] Jerome Blanchi c14c8d 
    auto
[d.j.a.y] Jerome Blanchi c14c8d 
    add(T1 a1, T2 a2) -> decltype(a1 + a2)
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      return a1 + a2;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test(const int c, volatile int v)
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(0)="">::value == true, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(c)="">::value == false, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(v)="">::value == false, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      auto ac = c;
[d.j.a.y] Jerome Blanchi c14c8d 
      auto av = v;
[d.j.a.y] Jerome Blanchi c14c8d 
      auto sumi = ac + av + 'x';
[d.j.a.y] Jerome Blanchi c14c8d 
      auto sumf = ac + av + 1.0;
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(ac)="">::value == true, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(av)="">::value == true, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(sumi)="">::value == true, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(sumf)="">::value == false, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(add(c,="" v))="">::value == true, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      return (sumf > 0.0) ? sumi : add(c, v);
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_noexcept
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int f() { return 0; }
[d.j.a.y] Jerome Blanchi c14c8d 
    int g() noexcept { return 0; }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(noexcept(f()) == false, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(noexcept(g()) == true, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_constexpr
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename CharT >
[d.j.a.y] Jerome Blanchi c14c8d 
    unsigned long constexpr
[d.j.a.y] Jerome Blanchi c14c8d 
    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename CharT >
[d.j.a.y] Jerome Blanchi c14c8d 
    unsigned long constexpr
[d.j.a.y] Jerome Blanchi c14c8d 
    strlen_c(const CharT *const s) noexcept
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      return strlen_c_r(s, 0UL);
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("") == 0UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("1") == 1UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("example") == 7UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("another\0example") == 7UL, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_rvalue_references
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < int N >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct answer
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static constexpr int value = N;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    answer<1> f(int&)       { return answer<1>(); }
[d.j.a.y] Jerome Blanchi c14c8d 
    answer<2> f(const int&) { return answer<2>(); }
[d.j.a.y] Jerome Blanchi c14c8d 
    answer<3> f(int&&)      { return answer<3>(); }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    void
[d.j.a.y] Jerome Blanchi c14c8d 
    test()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      int i = 0;
[d.j.a.y] Jerome Blanchi c14c8d 
      const int c = 0;
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(decltype(f(i))::value == 1, "");
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(decltype(f(c))::value == 2, "");
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(decltype(f(0))::value == 3, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_uniform_initialization
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    struct test
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static const int zero {};
[d.j.a.y] Jerome Blanchi c14c8d 
      static const int one {1};
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(test::zero == 0, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(test::one == 1, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_lambdas
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    void
[d.j.a.y] Jerome Blanchi c14c8d 
    test1()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      auto lambda1 = [](){};
[d.j.a.y] Jerome Blanchi c14c8d 
      auto lambda2 = lambda1;
[d.j.a.y] Jerome Blanchi c14c8d 
      lambda1();
[d.j.a.y] Jerome Blanchi c14c8d 
      lambda2();
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test2()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      auto a = [](int i, int j){ return i + j; }(1, 2);
[d.j.a.y] Jerome Blanchi c14c8d 
      auto b = []() -> int { return '0'; }();
[d.j.a.y] Jerome Blanchi c14c8d 
      auto c = [=](){ return a + b; }();
[d.j.a.y] Jerome Blanchi c14c8d 
      auto d = [&](){ return c; }();
[d.j.a.y] Jerome Blanchi c14c8d 
      auto e = [a, &b](int x) mutable {
[d.j.a.y] Jerome Blanchi c14c8d 
        const auto identity = [](int y){ return y; };
[d.j.a.y] Jerome Blanchi c14c8d 
        for (auto i = 0; i < a; ++i)
[d.j.a.y] Jerome Blanchi c14c8d 
          a += b--;
[d.j.a.y] Jerome Blanchi c14c8d 
        return x + identity(a + b);
[d.j.a.y] Jerome Blanchi c14c8d 
      }(0);
[d.j.a.y] Jerome Blanchi c14c8d 
      return a + b + c + d + e;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test3()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto nullary = [](){ return 0; };
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto unary = [](int x){ return x; };
[d.j.a.y] Jerome Blanchi c14c8d 
      using nullary_t = decltype(nullary);
[d.j.a.y] Jerome Blanchi c14c8d 
      using unary_t = decltype(unary);
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto higher1st = [](nullary_t f){ return f(); };
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto higher2nd = [unary](nullary_t f1){
[d.j.a.y] Jerome Blanchi c14c8d 
        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
[d.j.a.y] Jerome Blanchi c14c8d 
      };
[d.j.a.y] Jerome Blanchi c14c8d 
      return higher1st(nullary) + higher2nd(nullary)(unary);
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_variadic_templates
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template <int...></int...>
[d.j.a.y] Jerome Blanchi c14c8d 
    struct sum;
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template <int int...="" n0,="" n1ton=""></int>
[d.j.a.y] Jerome Blanchi c14c8d 
    struct sum<n0, n1ton...=""></n0,>
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static constexpr auto value = N0 + sum<n1ton...>::value;</n1ton...>
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template <>
[d.j.a.y] Jerome Blanchi c14c8d 
    struct sum<>
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static constexpr auto value = 0;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<>::value == 0, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<1>::value == 1, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<23>::value == 23, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<1, 2>::value == 3, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<5, 5, 11>::value == 21, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
[d.j.a.y] Jerome Blanchi c14c8d 
  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
[d.j.a.y] Jerome Blanchi c14c8d 
  // because of this.
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_template_alias_sfinae
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    struct foo {};
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template<typename t=""></typename>
[d.j.a.y] Jerome Blanchi c14c8d 
    using member = typename T::member_type;
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template<typename t=""></typename>
[d.j.a.y] Jerome Blanchi c14c8d 
    void func(...) {}
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template<typename t=""></typename>
[d.j.a.y] Jerome Blanchi c14c8d 
    void func(member<t>*) {}</t>
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    void test();
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    void test() { func<foo>(0); }</foo>
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
}  // namespace cxx11
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#endif  // __cplusplus >= 201103L
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
]])
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
dnl  Tests for new features in C++14
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
// If the compiler admits that it is not ready for C++14, why torture it?
[d.j.a.y] Jerome Blanchi c14c8d 
// Hopefully, this will speed up the test.
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#ifndef __cplusplus
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#error "This is not a C++ compiler"
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#elif __cplusplus < 201402L
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#error "This is not a C++14 compiler"
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#else
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
namespace cxx14
[d.j.a.y] Jerome Blanchi c14c8d 
{
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_polymorphic_lambdas
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto lambda = [](auto&&... args){
[d.j.a.y] Jerome Blanchi c14c8d 
        const auto istiny = [](auto x){
[d.j.a.y] Jerome Blanchi c14c8d 
          return (sizeof(x) == 1UL) ? 1 : 0;
[d.j.a.y] Jerome Blanchi c14c8d 
        };
[d.j.a.y] Jerome Blanchi c14c8d 
        const int aretiny[] = { istiny(args)... };
[d.j.a.y] Jerome Blanchi c14c8d 
        return aretiny[0];
[d.j.a.y] Jerome Blanchi c14c8d 
      };
[d.j.a.y] Jerome Blanchi c14c8d 
      return lambda(1, 1L, 1.0f, '1');
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_binary_literals
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    constexpr auto ivii = 0b0000000000101010;
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(ivii == 42, "wrong value");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_generalized_constexpr
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename CharT >
[d.j.a.y] Jerome Blanchi c14c8d 
    constexpr unsigned long
[d.j.a.y] Jerome Blanchi c14c8d 
    strlen_c(const CharT *const s) noexcept
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      auto length = 0UL;
[d.j.a.y] Jerome Blanchi c14c8d 
      for (auto p = s; *p; ++p)
[d.j.a.y] Jerome Blanchi c14c8d 
        ++length;
[d.j.a.y] Jerome Blanchi c14c8d 
      return length;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("") == 0UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("x") == 1UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("test") == 4UL, "");
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(strlen_c("another\0test") == 7UL, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_lambda_init_capture
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      auto x = 0;
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto lambda1 = [a = x](int b){ return a + b; };
[d.j.a.y] Jerome Blanchi c14c8d 
      const auto lambda2 = [a = lambda1(x)](){ return a; };
[d.j.a.y] Jerome Blanchi c14c8d 
      return lambda2();
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_digit_seperators
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    constexpr auto ten_million = 100'000'000;
[d.j.a.y] Jerome Blanchi c14c8d 
    static_assert(ten_million == 100000000, "");
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  namespace test_return_type_deduction
[d.j.a.y] Jerome Blanchi c14c8d 
  {
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    auto f(int& x) { return x; }
[d.j.a.y] Jerome Blanchi c14c8d 
    decltype(auto) g(int& x) { return x; }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T1, typename T2 >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct is_same
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static constexpr auto value = false;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    template < typename T >
[d.j.a.y] Jerome Blanchi c14c8d 
    struct is_same<t, t=""></t,>
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      static constexpr auto value = true;
[d.j.a.y] Jerome Blanchi c14c8d 
    };
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
    int
[d.j.a.y] Jerome Blanchi c14c8d 
    test()
[d.j.a.y] Jerome Blanchi c14c8d 
    {
[d.j.a.y] Jerome Blanchi c14c8d 
      auto x = 0;
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int, decltype(f(x))="">::value, "");</int,>
[d.j.a.y] Jerome Blanchi c14c8d 
      static_assert(is_same<int&, decltype(g(x))="">::value, "");</int&,>
[d.j.a.y] Jerome Blanchi c14c8d 
      return x;
[d.j.a.y] Jerome Blanchi c14c8d 
    }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
  }
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
}  // namespace cxx14
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
#endif  // __cplusplus >= 201402L
[d.j.a.y] Jerome Blanchi c14c8d
[d.j.a.y] Jerome Blanchi c14c8d 
]])

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