------- Comment #4 from rguenth at gcc dot gnu dot org 2009-10-03 13:19 ------- We only have one cgraph node for _ZN7DVectoraSERK6Vector in both files, but its decl isn't the prevailing one!? The one for the cgraph node is LDPR_PREEMPTED_IR while the prevailing one is LDPR_PREVAILING_DEF.
It's the first one selected as LDPR_PREVAILING_DEF because of: addressable used public static weak autoinline QI defer-output file slufactor.3.ii line 15 col 14 align 16 vs. addressable used public static weak autoinline QI defer-output file dvector.3.ii line 15 col 14 align 16 so we go the DECL_WEAK path in get_resolution (). That is, if we drop a cgraph-node for a decl (because it's not needed) before streaming out the cgraph we should probably change the cgraph-nodes decl flag to drop TREE_STATIC and set DECL_EXTERNAL instead. At least we have to choose a DECL_WEAK one with a cgraph node to not run into this PR. Or completely defer decl merging to after we have read the cgraph so we can better decide on what to do. We'd delay lto_register_deferred_decls_in_symtab until after input_cgraph (not merging the cgraph therein), and we even can read the summaries without hitting PR41487. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41552
