[Bug c++/105652] ICE: in is_base_type, at dwarf2out.cc:13400

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105652

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-05-19
                 CC|                            |jason at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
#1  0x00000000011f808e in is_base_type (type=
    <template_type_parm 0x7ffff6689150 T>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:13400
13400         gcc_unreachable ();
(gdb) l
13395         return 0;
13396
13397       default:
13398         if (is_cxx_auto (type))
13399           return 0;
13400         gcc_unreachable ();
13401       }

(gdb) bt
#0  fancy_abort (file=0x3293a38 "/home/rguenther/src/gcc4/gcc/dwarf2out.cc", 
    line=13400, 
    function=0x329ec90 <is_base_type(tree_node*)::__FUNCTION__> "is_base_type")
    at /home/rguenther/src/gcc4/gcc/diagnostic.cc:2022
#1  0x00000000011f808e in is_base_type (
    type=<template_type_parm 0x7ffff6689150 T>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:13400
#2  0x00000000011fa255 in modified_type_die (
    type=<template_type_parm 0x7ffff6689150 T>, cv_quals=0, reverse=false, 
    context_die=<dw_die_ref 0x7ffff65430a0 DW_TAG_structure_type
<parent=0x7ffff6543000 DW_TAG_compile_unit>>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:13884
#3  0x0000000001213da1 in add_type_attribute (
    object_die=<dw_die_ref 0x7ffff6543370 DW_TAG_template_type_param
<parent=0x7ffff65430a0 DW_TAG_structure_type>>, 
    type=<template_type_parm 0x7ffff6689150 T>, cv_quals=0, reverse=false, 
    context_die=<dw_die_ref 0x7ffff65430a0 DW_TAG_structure_type
<parent=0x7ffff6543000 DW_TAG_compile_unit>>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:22298
#4  0x00000000011fb0e8 in generic_parameter_die (
    parm=<type_decl 0x7ffff66871c8 T>, 
    arg=<template_type_parm 0x7ffff6689150 T>, emit_name_p=true, 
    parent_die=<dw_die_ref 0x7ffff65430a0 DW_TAG_structure_type
<parent=0x7ffff6543000 DW_TAG_compile_unit>>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:14143
#5  0x00000000011fae34 in gen_generic_params_dies (
    t=<record_type 0x7ffff66891f8 S>)
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:14063
#6  0x0000000001223f27 in gen_scheduled_generic_parms_dies ()
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:27824
#7  0x000000000122f990 in dwarf2out_early_finish (filename=0x457ec70 "t.ii")
    at /home/rguenther/src/gcc4/gcc/dwarf2out.cc:32943