------- Comment #1 from burnus at gcc dot gnu dot org 2010-05-10 10:30 ------- -Werror= was added 2006 ( http://gcc.gnu.org/viewcvs?view=revision&revision=109907 ) and the -fdiagnostics-show-option already exists since 2005 (http://gcc.gnu.org/viewcvs?view=revision&revision=99169 ) - though it has only be enabled very recently, cf. http://gcc.gnu.org/ml/gcc-patches/2010-04/msg00910.html
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44054