cpp.texi: Document __GXX_EXPERIMENTAL_CXX1Y__.

2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>

	* doc/cpp.texi: Document __GXX_EXPERIMENTAL_CXX1Y__.

/c-family
2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>

	* c-cppbuiltin.c (c_cpp_builtins): Define __GXX_EXPERIMENTAL_CXX1Y__.

/testsuite
2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp1y/cxx1y_macro.C: New.

From-SVN: r198249

gcc/ChangeLog

+2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* doc/cpp.texi: Document __GXX_EXPERIMENTAL_CXX1Y__.
+
 2013-04-24  Marek Polacek  <polacek@redhat.com>
 
 	* tree-scalar-evolution.h (analyze_scalar_evolution): Remove.

gcc/c-family/ChangeLog

+2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* c-cppbuiltin.c (c_cpp_builtins): Define __GXX_EXPERIMENTAL_CXX1Y__.
+
 2013-04-12  Jakub Jelinek  <jakub@redhat.com>
 
 	* c-format.c (gcc_diag_char_table, gcc_tdiag_char_table,

gcc/c-family/c-cppbuiltin.c

@@ -713,8 +713,10 @@ c_cpp_builtins (cpp_reader *pfile)
 	cpp_define (pfile, "__DEPRECATED");
       if (flag_rtti)
 	cpp_define (pfile, "__GXX_RTTI");
-      if (cxx_dialect >= cxx0x)
+      if (cxx_dialect == cxx0x)
         cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__");
+      if (cxx_dialect >= cxx1y)
+        cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX1Y__");
     }
   /* Note that we define this for C as well, so that we know if
      __attribute__((cleanup)) will interface with EH.  */

gcc/doc/cpp.texi

@@ -2319,6 +2319,13 @@ features likely to be included in C++0x are available. Note that these
 features are experimental, and may change or be removed in future
 versions of GCC.
 
+@item __GXX_EXPERIMENTAL_CXX1Y__
+This macro is defined when compiling a C++ source file with the option
+@option{-std=c++1y} or @option{-std=gnu++1y}. It indicates that some
+features likely to be included in C++1y are available. Note that these
+features are experimental, and may change or be removed in future
+versions of GCC.
+
 @item __GXX_WEAK__
 This macro is defined when compiling a C++ source file.  It has the
 value 1 if the compiler will use weak symbols, COMDAT sections, or

gcc/testsuite/ChangeLog

 2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>
 
+	* g++.dg/cpp1y/cxx1y_macro.C: New.
+
+2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>
+
 	PR c++/56970
 	* g++.dg/cpp0x/sfinae45.C: New.
 

gcc/testsuite/g++.dg/cpp1y/cxx1y_macro.C

+// { dg-options "-std=c++1y" }
+
+#ifndef __GXX_EXPERIMENTAL_CXX1Y__
+#error
+#endif