[Bug pch/53880] [4.8 Regression] compile time regression when generating precompiled headers for boost

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53880

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-24 
09:34:21 UTC ---
Err, isn't the GTY annotation in

     as y1.  x0 is the spelling location for the argument token "1",
     and x2 is the spelling location for the argument token "2".  */
  source_location * GTY((length ("2 * %h.n_tokens"))) macro_locations;

simply pointless?