[PATCH] Fix failing C++17 test

[Jonathan Wakely]

The DejaGnu directives were in the wrong order, so this test was
UNSUPPORTED and the error went unnoticed. Fixed like so.

        * testsuite/24_iterators/range_access_cpp17.cc: Fix order of dg-do
        and dg-options directives. Fix invalid test.

Tested powerpc64le-linux, committed to trunk.


commit 0365d53484cabf9eb1a49057c98f78b6b09fb513
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Sep 20 16:37:00 2017 +0100

    Fix failing C++17 test
    
            * testsuite/24_iterators/range_access_cpp17.cc: Fix order of dg-do
            and dg-options directives. Fix invalid test.

diff --git a/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc 
b/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc
index 2402fa8c8ff..cb6b1c41619 100644
--- a/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc
+++ b/libstdc++-v3/testsuite/24_iterators/range_access_cpp17.cc
@@ -1,5 +1,5 @@
-// { dg-do compile { target c++17 } }
 // { dg-options "-std=gnu++17" }
+// { dg-do compile { target c++17 } }
 
 // Copyright (C) 2017 Free Software Foundation, Inc.
 //
@@ -47,7 +47,7 @@ void
 test03()
 {
   using std::reverse_iterator;
-  static std::initializer_list<int> il{1};
+  static constexpr std::initializer_list<int> il{1};
   static_assert(std::cbegin(il) == il.begin());
   static_assert(std::cend(il) == il.end());
   static_assert(std::rbegin(il) == reverse_iterator<const int*>(il.end()));