------- Comment #3 from rguenth at gcc dot gnu dot org 2010-08-30 09:09 ------- It's because we have dead variables in referenced vars and
455 /* Make sure the tail invocation of this function does not refer 456 to local variables. */ 457 FOR_EACH_REFERENCED_VAR (var, rvi) 458 { 459 if (TREE_CODE (var) != PARM_DECL 460 && auto_var_in_fn_p (var, cfun->decl) 461 && (ref_maybe_used_by_stmt_p (call, var) 462 || call_may_clobber_ref_p (call, var))) 463 return; triggers for such a dead variable. The whole check isn't necessary for sibcalling though. Still it looks like a latent issue - dead vars shouldn't be marked TREE_ADDRESSABLE. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2010-08-30 08:56:55 |2010-08-30 09:09:09 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45449