Record and output access specifiers for nested typedefs

We currently do not record access information for typedefs defined inside
classes.  Consider:

struct foo
{
   typedef int PUBLIC;
 private:
   typedef int PRIVATE;
   PRIVATE b;
};

(gdb) ptype foo
type = struct foo {
  private:
    PRIVATE b;

    typedef int PRIVATE;
    typedef int PUBLIC;
}

This patch fixes this:

(gdb) ptype foo
type = struct foo {
  private:
    PRIVATE b;

    typedef int PRIVATE;
  public:
    typedef int PUBLIC;
}

gdb/ChangeLog:

	* c-typeprint.c (enum access_specifier): Moved here from
	c_type_print_base.
	(output_access_specifier): New function.
	(c_type_print_base): Consider typedefs when assessing
	whether access labels are needed.
	Use output_access_specifier as needed.
	Output access specifier for typedefs, if needed.
	* dwarf2read.c (dwarf2_add_typedef): Record DW_AT_accessibility.
	* gdbtypes.h (struct typedef_field) <is_protected, is_private>: New
	fields.
	(TYPE_TYPEDEF_FIELD_PROTECTED, TYPE_TYPEDEF_FIELD_PRIVATE): New
	accessor macros.

gdb/testsuite/ChangeLog:

	* gdb.cp/classes.cc (class_with_typedefs, class_with_public_typedef)
	(class_with_protected_typedef, class_with_private_typedef)
	(struct_with_public_typedef, struct_with_protected_typedef)
	(struct_with_private_typedef): New classes/structs.
	* gdb.cp/classes.exp (test_ptype_class_objects): Add tests for
	typedefs and access specifiers.

1 files changed, 83 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.cp/classes.cc b/gdb/testsuite/gdb.cp/classes.cc
index 2a81473..50f0740 100644
--- a/gdb/testsuite/gdb.cp/classes.cc
+++ b/gdb/testsuite/gdb.cp/classes.cc
@@ -545,6 +545,82 @@ small::method ()
   return x + 5;
 }
 
+class class_with_typedefs
+{
+public:
+  typedef int public_int;
+protected:
+  typedef int protected_int;
+private:
+  typedef int private_int;
+
+public:
+  class_with_typedefs ()
+    : public_int_ (1), protected_int_ (2), private_int_ (3) {}
+  public_int add_public (public_int a) { return a + public_int_; }
+  public_int add_all (int a)
+  { return add_public (a) + add_protected (a) + add_private (a); }
+
+protected:
+  protected_int add_protected (protected_int a) { return a + protected_int_; }
+
+private:
+  private_int add_private (private_int a) { return a + private_int_; }
+
+protected:
+  public_int public_int_;
+  protected_int protected_int_;
+  private_int private_int_;
+};
+
+class class_with_public_typedef
+{
+  int a;
+public:
+  typedef int INT;
+  INT b;
+};
+
+class class_with_protected_typedef
+{
+  int a;
+protected:
+  typedef int INT;
+  INT b;
+};
+
+class class_with_private_typedef
+{
+  int a;
+private:
+  typedef int INT;
+  INT b;
+};
+
+struct struct_with_public_typedef
+{
+  int a;
+public:
+  typedef int INT;
+  INT b;
+};
+
+struct struct_with_protected_typedef
+{
+  int a;
+protected:
+  typedef int INT;
+  INT b;
+};
+
+struct struct_with_private_typedef
+{
+  int a;
+private:
+  typedef int INT;
+  INT b;
+};
+
 void marker_reg1 () {}
 
 int
@@ -624,3 +700,10 @@ protected_class protected_c;
 default_private_class default_private_c;
 explicit_private_class explicit_private_c;
 mixed_protection_class mixed_protection_c;
+class_with_typedefs class_with_typedefs_c;
+class_with_public_typedef class_with_public_typedef_c;
+class_with_protected_typedef class_with_protected_typedef_c;
+class_with_private_typedef class_with_private_typedef_c;
+struct_with_public_typedef struct_with_public_typedef_s;
+struct_with_protected_typedef struct_with_protected_typedef_s;
+struct_with_private_typedef struct_with_private_typedef_s;