https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69133
--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> --- The following has even chance to work :) Index: cgraph.c =================================================================== --- cgraph.c (revision 232466) +++ cgraph.c (working copy) @@ -3305,10 +3295,12 @@ cgraph_node::get_untransformed_body (voi size_t len; tree decl = this->decl; - if (DECL_RESULT (decl)) + /* Check if body is already there. Either we have gimple body or + the function is thunk and in that case we set DECL_ARGUMENTS. */ + if (DECL_ARGUMENTS (decl) || gimple_has_body_p (decl)) return false; - gcc_assert (in_lto_p); + gcc_assert (in_lto_p && !DECL_RESULT (decl)); timevar_push (TV_IPA_LTO_GIMPLE_IN);