[C++ PATCH] Remove the implementation of N3994, terse range-for loops.

[Ville Voutilainen]

Since N3994 ended up being rejected and was never included
in C++17, I want to remove the support for it. It's easy to bring
it back if such a facility is resurrected, but for now, let's remove
such an extension.

Tested on Linux-PPC64.

/cp
2015-10-31  Ville Voutilainen  <ville.voutilai...@gmail.com>

    Remove the implementation of N3994, terse range-for loops.
    * parser.c (cp_parser_for_init_statement): Remove the parsing
    of a terse range-for.

/testsuite
2015-10-31  Ville Voutilainen  <ville.voutilai...@gmail.com>

    Remove the implementation of N3994, terse range-for loops.
    * g++.dg/cpp1z/range-for1.C: Remove.

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index c8f8b3d..8ca82d3 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -11279,22 +11279,6 @@ cp_parser_for_init_statement (cp_parser* parser, tree 
*decl)
       bool is_range_for = false;
       bool saved_colon_corrects_to_scope_p = parser->colon_corrects_to_scope_p;
 
-      if (cp_lexer_next_token_is (parser->lexer, CPP_NAME)
-         && cp_lexer_nth_token_is (parser->lexer, 2, CPP_COLON))
-       {
-         /* N3994 -- for (id : init) ... */
-         if (cxx_dialect < cxx1z)
-           pedwarn (input_location, 0, "range-based for loop without a "
-                    "type-specifier only available with "
-                    "-std=c++1z or -std=gnu++1z");
-         tree name = cp_parser_identifier (parser);
-         tree type = cp_build_reference_type (make_auto (), /*rval*/true);
-         *decl = build_decl (input_location, VAR_DECL, name, type);
-         pushdecl (*decl);
-         cp_lexer_consume_token (parser->lexer);
-         return true;
-       }
-
       /* A colon is used in range-based for.  */
       parser->colon_corrects_to_scope_p = false;
 
diff --git a/gcc/testsuite/g++.dg/cpp1z/range-for1.C 
b/gcc/testsuite/g++.dg/cpp1z/range-for1.C
deleted file mode 100644
index 7e6d055..0000000
--- a/gcc/testsuite/g++.dg/cpp1z/range-for1.C
+++ /dev/null
@@ -1,12 +0,0 @@
-// { dg-options "-std=c++1z -pedantic-errors" }
-
-extern "C" int printf (const char *, ...);
-#include <initializer_list>
-
-int main()
-{
-  for (i : {1,2})
-    {
-      printf ("%d ", i);
-    }
-}