Hi, list. I found the bug in the patch(what a irony!). http://gcc.gnu.org/ml/gcc-patches/2005-03/msg01500.html so my patch to my problem is this. vi +477 gcc/cgraph.c ... { if (!node->reachable && node->local.finalized) { - gcc_assert (!cgraph_global_info_ready); notice_global_symbol (node->decl); node->reachable = 1; ... That patch is Really useless to me, i don't use c++. so will in future. The patch acceptance is Funny.