gdb/gdbtypes: replace TYPE_ERROR_NAME macro with method

Replace the TYPE_ERROR_NAME macro with the method type::error_name.

Change-Id: I59afa6a8ced9c3bb53f3961965479a11deb41407
Approved-By: Tom Tromey <tom@tromey.com>
diff --git a/gdb/c-typeprint.c b/gdb/c-typeprint.c
index 5d78aa3..76472c2 100644
--- a/gdb/c-typeprint.c
+++ b/gdb/c-typeprint.c
@@ -1514,7 +1514,7 @@ c_type_print_base_1 (struct type *type, struct ui_file *stream,
       break;
 
     case TYPE_CODE_ERROR:
-      gdb_printf (stream, "%s", TYPE_ERROR_NAME (type));
+      gdb_printf (stream, "%s", type->error_name ());
       break;
 
     case TYPE_CODE_RANGE:
diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c
index 786e26b..f930906 100644
--- a/gdb/f-typeprint.c
+++ b/gdb/f-typeprint.c
@@ -364,7 +364,7 @@ f_language::f_type_print_base (struct type *type, struct ui_file *stream,
       break;
 
     case TYPE_CODE_ERROR:
-      gdb_printf (stream, "%*s%s", level, "", TYPE_ERROR_NAME (type));
+      gdb_printf (stream, "%*s%s", level, "", type->error_name ());
       break;
 
     case TYPE_CODE_RANGE:
diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h
index 80886e5..e9a3c63 100644
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -1065,6 +1065,13 @@ struct type
     return this->name () != nullptr ? this->name () : _("<unnamed type>");
   }
 
+  /* Return the name of this type, or "<error type>" if it has no
+     name.  */
+  const char *error_name () const
+  {
+    return this->name () != nullptr ? this->name () : _("<error type>");
+  }
+
   /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
      But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
      so you only have to call check_typedef once.  Since value::allocate
@@ -2050,12 +2057,6 @@ extern void set_type_vptr_basetype (struct type *, struct type *);
        || TYPE_NFN_FIELDS (thistype) == 0) \
    && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
 
-/* * A helper macro that returns the name of an error type.  If the
-   type has a name, it is used; otherwise, a default is used.  */
-
-#define TYPE_ERROR_NAME(type) \
-  (type->name () ? type->name () : _("<error type>"))
-
 /* Given TYPE, return its floatformat.  */
 const struct floatformat *floatformat_from_type (const struct type *type);
 
diff --git a/gdb/p-typeprint.c b/gdb/p-typeprint.c
index a7ba45c..c997ac9 100644
--- a/gdb/p-typeprint.c
+++ b/gdb/p-typeprint.c
@@ -689,7 +689,7 @@ pascal_language::type_print_base (struct type *type, struct ui_file *stream, int
       break;
 
     case TYPE_CODE_ERROR:
-      gdb_printf (stream, "%s", TYPE_ERROR_NAME (type));
+      gdb_printf (stream, "%s", type->error_name ());
       break;
 
       /* this probably does not work for enums.  */
diff --git a/gdb/valprint.c b/gdb/valprint.c
index afc7fc0..62b1b33 100644
--- a/gdb/valprint.c
+++ b/gdb/valprint.c
@@ -1038,7 +1038,7 @@ generic_value_print (struct value *val, struct ui_file *stream, int recurse,
       break;
 
     case TYPE_CODE_ERROR:
-      gdb_printf (stream, "%s", TYPE_ERROR_NAME (type));
+      gdb_printf (stream, "%s", type->error_name ());
       break;
 
     case TYPE_CODE_UNDEF: