[Bug c++/98719] New: [modules] translating importable standard headers causes various ICEs

["boris at kolpackov dot net" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98719

            Bug ID: 98719
           Summary: [modules] translating importable standard headers
                    causes various ICEs
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: boris at kolpackov dot net
  Target Milestone: ---

Created attachment 49989
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49989&action=edit
<string> build transcript

An attempt to enable include translation for all the importable standard
headers (http://eel.is/c++draft/library#headers-4) causes various internal
compiler errors. Here are a few examples:

Trying to translate from a top-level <string> include:

c++ ../../gcc-install/include/c++/11.0.0/h{type_traits}
c++ ../../gcc-install/include/c++/11.0.0/h{concepts}
c++ ../../gcc-install/include/c++/11.0.0/h{compare}
In file included from
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
                 from
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/bits/stl_algobase.h:65,
                 from
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/bits/char_traits.h:39,
                 from
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/string:40:
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/bits/iterator_concepts.h:34:
internal compiler error: in set_filename, at cp/module.cc:19081
   34 |
      |
0xc69be8 module_state::set_filename(Cody::Packet const&)
        ../../gcc/gcc/cp/module.cc:19081
0xc69e4f maybe_translate_include
        ../../gcc/gcc/cp/module.cc:19124
0x2bfcda7 _cpp_stack_file
        ../../gcc/libcpp/files.c:912
0x2bfd420 _cpp_stack_include
        ../../gcc/libcpp/files.c:1104
0x2bf15ea do_include_common
        ../../gcc/libcpp/directives.c:853
0x2bf1642 do_include
        ../../gcc/libcpp/directives.c:865
0x2bf0bc0 _cpp_handle_directive
        ../../gcc/libcpp/directives.c:541
0x2c094d1 cpp_directive_only_process(cpp_reader*, void*, void (*)(cpp_reader*,
CPP_DO_task, void*, ...))
        ../../gcc/libcpp/lex.c:4393
0xf11c8e scan_translation_unit_directives_only
        ../../gcc/gcc/c-family/c-ppoutput.c:402
0xf11158 preprocess_file(cpp_reader*)
        ../../gcc/gcc/c-family/c-ppoutput.c:100
0xf0b6e4 c_common_init()
        ../../gcc/gcc/c-family/c-opts.c:1188
0xbe4d7b cxx_init()
        ../../gcc/gcc/cp/lex.c:332
0x1805e47 lang_dependent_init
        ../../gcc/gcc/toplev.c:1881
0x18066f9 do_compile
        ../../gcc/gcc/toplev.c:2178


Trying to translate from a top-level <iostream> include:

c++ ../../gcc-install/include/c++/11.0.0/h{iosfwd}
c++ ../../gcc-install/include/c++/11.0.0/h{typeinfo}
c++ ../../gcc-install/include/c++/11.0.0/h{new}
c++ ../../gcc-install/include/c++/11.0.0/h{type_traits}
c++ ../../gcc-install/include/c++/11.0.0/h{exception}
/home/boris/work/build2/tests/modules/gcc2/gcc-install/include/c++/11.0.0/exception:
internal compiler error: in write_cluster, at cp/module.cc:14563
0xc5b52c module_state::write_cluster(elf_out*, depset**, unsigned int,
depset::hash&, unsigned int*, unsigned int*)
        ../../gcc/gcc/cp/module.cc:14562
0xc65808 module_state::write(elf_out*, cpp_reader*)
        ../../gcc/gcc/cp/module.cc:17691
0xc6bbfd finish_module_processing(cpp_reader*)
        ../../gcc/gcc/cp/module.cc:19747
0xb8a7a1 c_parse_final_cleanups()
        ../../gcc/gcc/cp/decl2.c:5178
0xf0b805 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1233

The build transcripts for these two cases are attached.