http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59379
--- Comment #13 from Igor Zamyatin <izamyatin at gmail dot com> --- I meant that with 3-stage gcc of r204980 testcase from the attachment was compiled and ran successfully, i.e. no infinite loop. Currently debugging shows that routine mul_double_wide_with_sign (which is actually inlined into aff_combination_scale) from double_int.c is miscompiled: in one case for a bad revision new_coef got value which is different from the value for new_coef for r204980