------- Comment #9 from jakub at gcc dot gnu dot org 2010-03-26 10:28 ------- We call get_alias_set on a 1 bit precision unsigned type with no alias set. This calls lang_hooks.get_alias_set, which does c_common_signed_type. With -g it returns a type with alias set computed, but with -g0 that type doesn't have alias set computed yet and a new alias set is created for it.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43516
