N3472 binary constants

	* include/cpplib.h (struct cpp_options): Fix a typo in user_literals
	field comment.  Add binary_constants field.
	* init.c (struct lang_flags): Add binary_constants field.
	(lang_defaults): Add bin_cst column to the table.
	(cpp_set_lang): Initialize CPP_OPTION (pfile, binary_constants).
	* expr.c (cpp_classify_number): Talk about C++11 instead of C++0x
	in diagnostics.  Accept binary constants if
	CPP_OPTION (pfile, binary_constants) even when pedantic.  Adjust
	pedwarn message.

	* g++.dg/cpp/limits.C: Adjust warning wording.
	* g++.dg/system-binary-constants-1.C: Likewise.
	* g++.dg/cpp1y/system-binary-constants-1.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@198380 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 42 insertions, 19 deletions

diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 329f5e0b938..da68e5210a9 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,16 @@
+2013-04-28  Jakub Jelinek  <jakub@redhat.com>
+
+	N3472 binary constants
+	* include/cpplib.h (struct cpp_options): Fix a typo in user_literals
+	field comment.  Add binary_constants field.
+	* init.c (struct lang_flags): Add binary_constants field.
+	(lang_defaults): Add bin_cst column to the table.
+	(cpp_set_lang): Initialize CPP_OPTION (pfile, binary_constants).
+	* expr.c (cpp_classify_number): Talk about C++11 instead of C++0x
+	in diagnostics.  Accept binary constants if
+	CPP_OPTION (pfile, binary_constants) even when pedantic.  Adjust
+	pedwarn message.
+
 2013-04-24  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/cpplib.h (enum c_lang): Add CLK_GNUCXX1Y and CLK_CXX1Y.
diff --git a/libcpp/expr.c b/libcpp/expr.c
index 46d9fd386ab..0eb6c13c2f0 100644
--- a/libcpp/expr.c
+++ b/libcpp/expr.c
@@ -621,7 +621,7 @@ cpp_classify_number (cpp_reader *pfile, const cpp_token *token,
 	  && CPP_OPTION (pfile, cpp_warn_long_long))
         {
           const char *message = CPP_OPTION (pfile, cplusplus) 
-		                ? N_("use of C++0x long long integer constant")
+				? N_("use of C++11 long long integer constant")
 		                : N_("use of C99 long long integer constant");
 
 	  if (CPP_OPTION (pfile, c99))
@@ -639,9 +639,14 @@ cpp_classify_number (cpp_reader *pfile, const cpp_token *token,
   if ((result & CPP_N_IMAGINARY) && CPP_PEDANTIC (pfile))
     cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
 			 "imaginary constants are a GCC extension");
-  if (radix == 2 && CPP_PEDANTIC (pfile))
+  if (radix == 2
+      && !CPP_OPTION (pfile, binary_constants)
+      && CPP_PEDANTIC (pfile))
     cpp_error_with_line (pfile, CPP_DL_PEDWARN, virtual_location, 0,
-			 "binary constants are a GCC extension");
+			 CPP_OPTION (pfile, cplusplus)
+			 ? "binary constants are a C++1y feature "
+			   "or GCC extension"
+			 : "binary constants are a GCC extension");
 
   if (radix == 10)
     result |= CPP_N_DECIMAL;
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
index 3084a11a853..76c297acdcb 100644
--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
@@ -423,7 +423,7 @@ struct cpp_options
   /* True for traditional preprocessing.  */
   unsigned char traditional;
 
-  /* Nonzero for C++ 2011 Standard user-defnied literals.  */
+  /* Nonzero for C++ 2011 Standard user-defined literals.  */
   unsigned char user_literals;
 
   /* Nonzero means warn when a string or character literal is followed by a
@@ -434,6 +434,9 @@ struct cpp_options
      literal number suffixes as user-defined literal number suffixes.  */
   unsigned char ext_numeric_literals;
 
+  /* Nonzero for C++ 2014 Standard binary constants.  */
+  unsigned char binary_constants;
+
   /* Holds the name of the target (execution) character set.  */
   const char *narrow_charset;
 
diff --git a/libcpp/init.c b/libcpp/init.c
index c3fa4af178b..97510003dd8 100644
--- a/libcpp/init.c
+++ b/libcpp/init.c
@@ -83,24 +83,25 @@ struct lang_flags
   char uliterals;
   char rliterals;
   char user_literals;
+  char binary_constants;
 };
 
 static const struct lang_flags lang_defaults[] =
-{ /*              c99 c++ xnum xid std  //   digr ulit rlit user_literals */
-  /* GNUC89   */  { 0,  0,  1,   0,  0,   1,   1,   0,   0,    0 },
-  /* GNUC99   */  { 1,  0,  1,   0,  0,   1,   1,   1,   1,    0 },
-  /* GNUC11   */  { 1,  0,  1,   0,  0,   1,   1,   1,   1,    0 },
-  /* STDC89   */  { 0,  0,  0,   0,  1,   0,   0,   0,   0,    0 },
-  /* STDC94   */  { 0,  0,  0,   0,  1,   0,   1,   0,   0,    0 },
-  /* STDC99   */  { 1,  0,  1,   0,  1,   1,   1,   0,   0,    0 },
-  /* STDC11   */  { 1,  0,  1,   0,  1,   1,   1,   1,   0,    0 },
-  /* GNUCXX   */  { 0,  1,  1,   0,  0,   1,   1,   0,   0,    0 },
-  /* CXX98    */  { 0,  1,  1,   0,  1,   1,   1,   0,   0,    0 },
-  /* GNUCXX11 */  { 1,  1,  1,   0,  0,   1,   1,   1,   1,    1 },
-  /* CXX11    */  { 1,  1,  1,   0,  1,   1,   1,   1,   1,    1 },
-  /* GNUCXX1Y */  { 1,  1,  1,   0,  0,   1,   1,   1,   1,    1 },
-  /* CXX1Y    */  { 1,  1,  1,   0,  1,   1,   1,   1,   1,    1 },
-  /* ASM      */  { 0,  0,  1,   0,  0,   1,   0,   0,   0,    0 }
+{ /*              c99 c++ xnum xid std  //   digr ulit rlit udlit bin_cst */
+  /* GNUC89   */  { 0,  0,  1,   0,  0,   1,   1,   0,   0,   0,    0 },
+  /* GNUC99   */  { 1,  0,  1,   0,  0,   1,   1,   1,   1,   0,    0 },
+  /* GNUC11   */  { 1,  0,  1,   0,  0,   1,   1,   1,   1,   0,    0 },
+  /* STDC89   */  { 0,  0,  0,   0,  1,   0,   0,   0,   0,   0,    0 },
+  /* STDC94   */  { 0,  0,  0,   0,  1,   0,   1,   0,   0,   0,    0 },
+  /* STDC99   */  { 1,  0,  1,   0,  1,   1,   1,   0,   0,   0,    0 },
+  /* STDC11   */  { 1,  0,  1,   0,  1,   1,   1,   1,   0,   0,    0 },
+  /* GNUCXX   */  { 0,  1,  1,   0,  0,   1,   1,   0,   0,   0,    0 },
+  /* CXX98    */  { 0,  1,  1,   0,  1,   1,   1,   0,   0,   0,    0 },
+  /* GNUCXX11 */  { 1,  1,  1,   0,  0,   1,   1,   1,   1,   1,    0 },
+  /* CXX11    */  { 1,  1,  1,   0,  1,   1,   1,   1,   1,   1,    0 },
+  /* GNUCXX1Y */  { 1,  1,  1,   0,  0,   1,   1,   1,   1,   1,    1 },
+  /* CXX1Y    */  { 1,  1,  1,   0,  1,   1,   1,   1,   1,   1,    1 },
+  /* ASM      */  { 0,  0,  1,   0,  0,   1,   0,   0,   0,   0,    0 }
   /* xid should be 1 for GNUC99, STDC99, GNUCXX, CXX98, GNUCXX11, CXX11,
      GNUCXX1Y, and CXX1Y when no longer experimental (when all uses of
      identifiers in the compiler have been audited for correct handling
@@ -126,6 +127,7 @@ cpp_set_lang (cpp_reader *pfile, enum c_lang lang)
   CPP_OPTION (pfile, uliterals)			 = l->uliterals;
   CPP_OPTION (pfile, rliterals)			 = l->rliterals;
   CPP_OPTION (pfile, user_literals)		 = l->user_literals;
+  CPP_OPTION (pfile, binary_constants)		 = l->binary_constants;
 }
 
 /* Initialize library global state.  */