http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51650
--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2011-12-22 12:51:08 UTC --- (In reply to comment #3) > In non-LTO mode we create the DIE for 'C' (which we do not create at all > with -flto) via > > #3 0x0000000000d54c57 in rest_of_type_compilation (type=0x7ffff5b8f3f0, > toplev=1) at /space/rguenther/src/svn/trunk/gcc/passes.c:238 > 238 debug_hooks->type_decl (TYPE_STUB_DECL (type), !toplev); > > we do not do something equivalent for LTO (but LTO expects to have those > DIEs created lazily ...). But dwarf2out isn't prepared to deal with > this situation it seems :/ > > I'm not sure we want to add corresponding debug_hooks calls to the LTO > machinery, but if, then one place to do that would be here: > > Index: gcc/lto/lto.c > =================================================================== > --- gcc/lto/lto.c (revision 182617) > +++ gcc/lto/lto.c (working copy) > @@ -881,6 +881,8 @@ uniquify_nodes (struct data_in *data_in, > lto_register_var_decl_in_symtab (data_in, t); > else if (TREE_CODE (t) == FUNCTION_DECL && !DECL_BUILT_IN (t)) > lto_register_function_decl_in_symtab (data_in, t); > + else if (!flag_wpa && TREE_CODE (t) == TYPE_DECL) > + debug_hooks->type_decl (t, DECL_FILE_SCOPE_P (t)); > else if (TYPE_P (t) && !TYPE_CANONICAL (t)) > TYPE_CANONICAL (t) = gimple_register_canonical_type (t); > } > > but I'm not sure we won't confuse dwarf2out.c with the order we are > calling type_decl () either (might be we start with T, and then the > one for its context C). The above patch fixes the reduced testcase at > least. > > Markus, can you give it a shot? libxul still fails to build with the same error message (but there is only one instance of this ICE now instead of three before your patch). Reducing...
