[PATCH v6 06/11] Implement printing of rvalue reference types and values

[Keith Seitz <keiths@redhat.com>]

This patch provides the ability to print out names of rvalue reference types
and values of those types. This is done in full similarity to regular
references, and as with them, we don't print out "const" suffix because all
rvalue references are const.

There are no changes to this patch from v5.

gdb/ChangeLog

	PR gdb/14441
	From Artemiy Volkov  <artemiyv@acm.org>
	* c-typeprint.c (c_print_type, c_type_print_varspec_prefix)
	(c_type_print_modifier, c_type_print_varspec_suffix)
	(c_type_print_base): Support printing rvalue reference types.
	* c-valprint.c (c_val_print, c_value_print): Support printing
	rvalue reference values.
---
 gdb/ChangeLog     | 10 ++++++++++
 gdb/c-typeprint.c | 10 ++++++----
 gdb/c-valprint.c  |  4 ++--
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e7d5a6b..50fd34a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -2,6 +2,16 @@
 
 	PR gdb/14441
 	From Artemiy Volkov  <artemiyv@acm.org>
+	* c-typeprint.c (c_print_type, c_type_print_varspec_prefix)
+	(c_type_print_modifier, c_type_print_varspec_suffix)
+	(c_type_print_base): Support printing rvalue reference types.
+	* c-valprint.c (c_val_print, c_value_print): Support printing
+	rvalue reference values.
+
+2017-MM-DD  Keith Seitz  <keiths@redhat.com>
+
+	PR gdb/14441
+	From Artemiy Volkov  <artemiyv@acm.org>
 	* cp-name-parser.y (ptr_operator): Handle the '&&' token in
 	typename.
 	* cp-support.c (replace_typedefs): Handle
diff --git a/gdb/c-typeprint.c b/gdb/c-typeprint.c
index b97216e..9e197f5 100644
--- a/gdb/c-typeprint.c
+++ b/gdb/c-typeprint.c
@@ -110,7 +110,7 @@ c_print_type (struct type *type,
 		      && !TYPE_VECTOR (type))
 		  || code == TYPE_CODE_MEMBERPTR
 		  || code == TYPE_CODE_METHODPTR
-		  || code == TYPE_CODE_REF)))
+		  || TYPE_IS_REFERENCE (type))))
 	fputs_filtered (" ", stream);
       need_post_space = (varstring != NULL && strcmp (varstring, "") != 0);
       c_type_print_varspec_prefix (type, stream, show, 0, need_post_space,
@@ -347,9 +347,10 @@ c_type_print_varspec_prefix (struct type *type,
       break;
 
     case TYPE_CODE_REF:
+    case TYPE_CODE_RVALUE_REF:
       c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
 				   stream, show, 1, 0, flags);
-      fprintf_filtered (stream, "&");
+      fprintf_filtered (stream, TYPE_CODE(type) == TYPE_CODE_REF ? "&" : "&&");
       c_type_print_modifier (type, stream, 1, need_post_space);
       break;
 
@@ -416,8 +417,7 @@ c_type_print_modifier (struct type *type, struct ui_file *stream,
   /* We don't print `const' qualifiers for references --- since all
      operators affect the thing referenced, not the reference itself,
      every reference is `const'.  */
-  if (TYPE_CONST (type)
-      && TYPE_CODE (type) != TYPE_CODE_REF)
+  if (TYPE_CONST (type) && !TYPE_IS_REFERENCE (type))
     {
       if (need_pre_space)
 	fprintf_filtered (stream, " ");
@@ -728,6 +728,7 @@ c_type_print_varspec_suffix (struct type *type,
 
     case TYPE_CODE_PTR:
     case TYPE_CODE_REF:
+    case TYPE_CODE_RVALUE_REF:
       c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
 				   show, 1, 0, flags);
       break;
@@ -896,6 +897,7 @@ c_type_print_base (struct type *type, struct ui_file *stream,
     case TYPE_CODE_PTR:
     case TYPE_CODE_MEMBERPTR:
     case TYPE_CODE_REF:
+    case TYPE_CODE_RVALUE_REF:
     case TYPE_CODE_FUNC:
     case TYPE_CODE_METHOD:
     case TYPE_CODE_METHODPTR:
diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c
index d29b20e..ab1de5c 100644
--- a/gdb/c-valprint.c
+++ b/gdb/c-valprint.c
@@ -541,6 +541,7 @@ c_val_print (struct type *type,
       break;
 
     case TYPE_CODE_REF:
+    case TYPE_CODE_RVALUE_REF:
     case TYPE_CODE_ENUM:
     case TYPE_CODE_FLAGS:
     case TYPE_CODE_FUNC:
@@ -587,8 +588,7 @@ c_value_print (struct value *val, struct ui_file *stream,
   val_type = value_type (val);
   type = check_typedef (val_type);
 
-  if (TYPE_CODE (type) == TYPE_CODE_PTR
-      || TYPE_CODE (type) == TYPE_CODE_REF)
+  if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type))
     {
       /* Hack:  remove (char *) for char strings.  Their
          type is indicated by the quoted string anyway.
-- 
2.1.0