https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59513
--- Comment #16 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- The change occurred between revisions r158253 (2010-04-13, "working?") and r162456 (2010-07-23, error). It could be r161021 (pr44477).