.gdbinit: print_id in rp_id [ci skip]

* .gdbinit (rp_id): use print_id instead of calling
  lookup_id_str() in a debugger context.

* symbol.c (ID_ENTRY_UNIT): made visible to debuggers.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60128 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gdbinit

@@ -398,12 +398,7 @@ define rp_id
       end
     end
     printf "(%ld): ", $id
-    set $str = lookup_id_str($id)
-    if $str
-      rp_string $str
-    else
-      echo undef\n
-    end
+    print_id $id
   end
   end
   end
@@ -1093,7 +1088,11 @@ define print_id
           set $arylen = $ary->as.heap.len
         end
         set $result = $aryptr[($serial % ID_ENTRY_UNIT) * ID_ENTRY_SIZE + $t]
-        print_string $result
+	if $result != RUBY_Qnil
+          print_string $result
+	else
+	  echo undef\n
+	end
       end
     end
   end

symbol.c

@@ -51,7 +51,7 @@ Init_op_tbl(void)
     }
 }
 
-enum {ID_ENTRY_UNIT = 512};
+static const int ID_ENTRY_UNIT = 512;
 
 enum id_entry_type {
     ID_ENTRY_STR,