[Bug c++/98422] New: C++ 20 module ICE with lto

[Bug c++/98422] New: C++ 20 module ICE with lto

[unlvsur at live dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98422

            Bug ID: 98422
           Summary: C++ 20 module ICE with lto
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: unlvsur at live dot com
  Target Milestone: ---

import hello;
int main()
{
        greeter("hello world");
}

cqwrteur@Home-Server:~/wwwww/module$ g++ -c main.cc -Ofast -std=c++20 -s -flto
-s -fmodules-ts
main.cc:5:1: error: type variant differs by TYPE_MODE
    5 | }
      | ^
 <record_type 0x7f54a6bd87e0 type_info addressable cxx-odr-p type_1 type_4
type_5 type_6 BLK
    size <integer_cst 0x7f54a6a90f00 type <integer_type 0x7f54a6aae0a8
bitsizetype> constant 128>
    unit-size <integer_cst 0x7f54a6a90f18 type <integer_type 0x7f54a6aae000
sizetype> constant 16>
    align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f54a6bd87e0
    fields <field_decl 0x7f54a5f09390 _vptr.type_info
        type <pointer_type 0x7f54a6bd4b28 type <pointer_type 0x7f54a6bd47e0
__vtbl_ptr_type>
            sizes-gimplified public unsigned DI
            size <integer_cst 0x7f54a6a90eb8 constant 64>
            unit-size <integer_cst 0x7f54a6a90ed0 constant 8>
            align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f54a6bd4b28
            pointer_to_this <pointer_type 0x7f54a38a3dc8>>
        used unsigned virtual DI /usr/local/include/c++/11.0.0/typeinfo:88:9
size <integer_cst 0x7f54a6a90eb8 64> unit-size <integer_cst 0x7f54a6a90ed0 8>
        align:64 warn_if_not_align:0 offset_align 128
        offset <integer_cst 0x7f54a6a90ee8 constant 0>
        bit-offset <integer_cst 0x7f54a6a90f30 constant 0> context <record_type
0x7f54a6bd87e0 type_info>
        chain <field_decl 0x7f54a5f09428 __name type <pointer_type
0x7f54a6aba498>
            used protected unsigned nonlocal decl_3 DI
/usr/local/include/c++/11.0.0/typeinfo:174:17 size <integer_cst 0x7f54a6a90eb8
64> unit-size <integer_cst 0x7f54a6a90ed0 8>
            align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
0x7f54a6a90ee8 0> bit-offset <integer_cst 0x7f54a6a90eb8 64> context
<record_type 0x7f54a6bd87e0 type_info>>> context <namespace_decl 0x7f54a6aab098
std>
    pointer_to_this <pointer_type 0x7f54a5f0d000> reference_to_this
<reference_type 0x7f54a5f0d2a0>>
 <record_type 0x7f54a6bd8888 type_info readonly cxx-odr-p type_1 type_4 type_5
VOID
    size <integer_cst 0x7f54a6a90f00 type <integer_type 0x7f54a6aae0a8
bitsizetype> constant 128>
    unit-size <integer_cst 0x7f54a6a90f18 type <integer_type 0x7f54a6aae000
sizetype> constant 16>
    align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f54a6bd8888
    fields <field_decl 0x7f54a5f09390 _vptr.type_info
        type <pointer_type 0x7f54a6bd4b28 type <pointer_type 0x7f54a6bd47e0
__vtbl_ptr_type>
            sizes-gimplified public unsigned DI
            size <integer_cst 0x7f54a6a90eb8 constant 64>
            unit-size <integer_cst 0x7f54a6a90ed0 constant 8>
            align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f54a6bd4b28
            pointer_to_this <pointer_type 0x7f54a38a3dc8>>
        used unsigned virtual DI /usr/local/include/c++/11.0.0/typeinfo:88:9
size <integer_cst 0x7f54a6a90eb8 64> unit-size <integer_cst 0x7f54a6a90ed0 8>
        align:64 warn_if_not_align:0 offset_align 128
        offset <integer_cst 0x7f54a6a90ee8 constant 0>
        bit-offset <integer_cst 0x7f54a6a90f30 constant 0> context <record_type
0x7f54a6bd87e0 type_info>
        chain <field_decl 0x7f54a5f09428 __name type <pointer_type
0x7f54a6aba498>
            used protected unsigned nonlocal decl_3 DI
/usr/local/include/c++/11.0.0/typeinfo:174:17 size <integer_cst 0x7f54a6a90eb8
64> unit-size <integer_cst 0x7f54a6a90ed0 8>
            align:64 warn_if_not_align:0 offset_align 128 offset <integer_cst
0x7f54a6a90ee8 0> bit-offset <integer_cst 0x7f54a6a90eb8 64> context
<record_type 0x7f54a6bd87e0 type_info>>> context <namespace_decl 0x7f54a6aab098
std>
    pointer_to_this <pointer_type 0x7f54a6bd8930> reference_to_this
<reference_type 0x7f54a5f0d150>>
during IPA pass: *free_lang_data
main.cc:5:1: internal compiler error: 'verify_type' failed
0x13937e5 verify_type(tree_node const*)
        ../../gcc/gcc/tree.c:14906
0x1396b33 free_lang_data
        ../../gcc/gcc/tree.c:6436
0x1396b33 execute
        ../../gcc/gcc/tree.c:6481
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

[Bug c++/98422] C++ 20 module ICE with lto

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98422

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |marxin at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2020-12-23

[Bug c++/98422] C++ 20 module ICE with lto

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98422

Patrick Palka <ppalka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ppalka at gcc dot gnu.org
         Resolution|---                         |WORKSFORME
             Status|NEW                         |RESOLVED

--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Can't reproduce even with GCC 11 (assuming the testcase is the same as
PR98364).