http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61141
--- Comment #4 from John David Anglin <danglin at gcc dot gnu.org> --- (gdb) p *fn $5 = {eh = 0xfa483f48, cfg = 0xf7f60a10, gimple_body = 0x0, gimple_df = 0xf7ba6900, x_current_loops = 0x0, su = 0x0, value_histograms = 0x0, decl = 0xf8f39100, static_chain_decl = 0x0, nonlocal_goto_save_area = 0x0, local_decls = 0x0, cilk_frame_decl = 0x0, machine = 0xfabd95f8, language = 0xf93de900, used_types_hash = 0xfaba0180, fde = 0xf8b9ad38, last_stmt_uid = 3927, funcdef_no = 719, function_start_locus = 6286828, function_end_locus = 6403815, curr_properties = 5312, last_verified = 0, cannot_be_copied_reason = 0x0, va_list_gpr_size = 255, va_list_fpr_size = 255, calls_setjmp = 0, calls_alloca = 0, is_cilk_function = 0, calls_cilk_spawn = 0, has_nonlocal_label = 0, cannot_be_copied_set = 1, stdarg = 0, after_inlining = 1, always_inline_functions_inlined = 1, can_throw_non_call_exceptions = 0, can_delete_dead_exceptions = 0, returns_struct = 0, returns_pcc_struct = 0, has_local_explicit_reg_vars = 0, is_thunk = 0, has_force_vectorize_loops = 0, has_simduid_loops = 0, tail_call_marked = 0} (gdb) p debug_tree (fn->decl) <function_decl 0xf8f39100 c_fully_fold_internal type <function_type 0xf8f3b600 type <pointer_type 0xf9be9960 tree type <union_type 0xf9be98a0 tree_node> sizes-gimplified asm_written public unsigned type_6 SI size <integer_cst 0xfad01570 constant 32> unit size <integer_cst 0xfad01588 constant 4> align 32 symtab -104946992 alias set -1 canonical type 0xf9be9900 pointer_to_this <pointer_type 0xfa4f62a0>> SI size <integer_cst 0xfad01570 32> unit size <integer_cst 0xfad01588 4> align 32 symtab 0 alias set -1 canonical type 0xf8f3b660 arg-types <tree_list 0xf8f38bb8 value <pointer_type 0xf9be9960 tree> chain <tree_list 0xf8f38bd0 value <boolean_type 0xfad0a5a0 bool> chain <tree_list 0xf8f38be8 value <pointer_type 0xfaad38a0> chain <tree_list 0xf8f38c00 value <pointer_type 0xfaad38a0> chain <tree_list 0xfad01db0 value <void_type 0xfad0a8a0 void>>>>>> pointer_to_this <pointer_type 0xfa40cc00>> addressable asm_written used nothrow static decl_5 decl_6 SI file ../../gcc/gcc/c-family/c-common.c line 1113 col 1 align 32 context <translation_unit_decl 0xfad09070 D.1> initial <error_mark 0xfad063b0> arguments <parm_decl 0xf91fb5f0 expr type <pointer_type 0xf9be9960 tree> used visited unsigned SI file ../../gcc/gcc/c-family/c-common.c line 1113 col 29 size <integer_cst 0xfad01570 32> unit size <integer_cst 0xfad01588 4> align 32 context <function_decl 0xf8f39100 c_fully_fold_internal> (reg/v/f:SI 6 %r6 [orig:914 expr ] [914]) arg-type <pointer_type 0xf9be9960 tree> incoming-rtl (reg:SI 26 %r26 [ expr ]) chain <parm_decl 0xf91fb6e0 in_init type <boolean_type 0xfad0a5a0 bool> used visited unsigned QI file ../../gcc/gcc/c-family/c-common.c line 1113 col 40 size <integer_cst 0xfad016a8 constant 8> unit size <integer_cst 0xfad016c0 constant 1> align 8 context <function_decl 0xf8f39100 c_fully_fold_internal> (reg/v:SI 9 %r9 [orig:915 in_init+-3 ] [915]) arg-type <integer_type 0xfad0a360 int> incoming-rtl (reg:SI 25 %r25 [ in_init+-3 ]) chain <parm_decl 0xf91fb7d0 maybe_const_operands>>> result <result_decl 0xf91fb870 D.36357 type <pointer_type 0xf9be9960 tree> unsigned ignored regdecl SI file ../../gcc/gcc/c-family/c-common.c line 1114 col 34 size <integer_cst 0xfad01570 32> unit size <integer_cst 0xfad01588 4> align 32 context <function_decl 0xf8f39100 c_fully_fold_internal> (reg/f:SI 913 [ <retval> ])> full-name "tree_node* c_fully_fold_internal(tree, bool, bool*, bool*)" pending-inline-info 0xf93dea68 (mem:SI (symbol_ref/v:SI ("@_ZL21c_fully_fold_internalP9tree_nodebPbS1_") [flags 0x203] <function_decl 0xf8f39100 c_fully_fold_internal>) [0 S4 A32]) struct-function 0xfa576478 chain <var_decl 0xf8f3b3c0 fname_vars>> $8 = void