[Ada] Fix comment in ada-lang.c:ada_is_ignored_field

Fix a comment that completly mistunderstood the code...

gdb/ChangeLog:

        * ada-lang.c (ada_is_ignored_field): Rewrite wrong comment.

1 files changed, 8 insertions, 3 deletions

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index cbdff3f..6382369 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -5882,7 +5882,7 @@ ada_is_ignored_field (struct type *type, int field_num)
 {
   if (field_num < 0 || field_num > TYPE_NFIELDS (type))
     return 1;
-   
+
   /* Check the name of that field.  */
   {
     const char *name = TYPE_FIELD_NAME (type, field_num);
@@ -5893,8 +5893,13 @@ ada_is_ignored_field (struct type *type, int field_num)
     if (name == NULL)
       return 1;
 
-    /* A field named "_parent" is internally generated by GNAT for
-       tagged types, and should not be printed either.  */
+    /* Normally, fields whose name start with an underscore ("_")
+       are fields that have been internally generated by the compiler,
+       and thus should not be printed.  The "_parent" field is special,
+       however: This is a field internally generated by the compiler
+       for tagged types, and it contains the components inherited from
+       the parent type.  This field should not be printed as is, but
+       should not be ignored either.  */
     if (name[0] == '_' && strncmp (name, "_parent", 7) != 0)
       return 1;
   }