http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51916
--- Comment #3 from Aldy Hernandez <aldyh at redhat dot com> 2012-01-20 16:25:19 UTC --- > No luck!-(I get 'No symbol "fcode" in current context.' and if not '<value > optimized out>'). > The only things I have been to print stepping through > streamer_get_builtin_tree (ib=<value optimized out>, data_in=<value optimized > out>) Try building the compiler without optimization (-O0).