https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93383
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
resolve_args gets a vector of arguments, one of which is
(gdb) p arg
$3 = <component_ref 0x7fffeaa33a80>
(gdb) pt
<component_ref 0x7fffeaa33a80
arg:0 <template_parm_index 0x7fffeaa33a50
type <template_type_parm 0x7fffeaa37a80 auto type_0 type_6 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffeaa37690
index 0 level 2 orig_level 2
chain <type_decl 0x7fffeaa3a000 auto>>
readonly constant
decl <const_decl 0x7fffeaa36150 Str type <template_type_parm
0x7fffeaa37a80 auto>
readonly constant decl_0 VOID 93383.C:15:10
align:1 warn_if_not_align:0 initial <template_parm_index
0x7fffeaa33a50>>
index 0 level 1 orig_level 1>
arg:1 <identifier_node 0x7fffeaa343c0 content
normal local bindings <(nil)>>
93383.C:18:26 start: 93383.C:18:22 finish: 93383.C:18:32>
i.e. it has no type and we crash on
4429 else if (VOID_TYPE_P (TREE_TYPE (arg)))
