[Bug c++/98707] New: ICE using std::string in a module partition

[Bug c++/98707] New: ICE using std::string in a module partition

[practicaldesignbook at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98707

            Bug ID: 98707
           Summary: ICE using std::string in a module partition
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: practicaldesignbook at gmail dot com
  Target Milestone: ---

Created attachment 49983
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49983&action=edit
Input files A.cpp and Test.cpp to trigger bug along with associated
preprocessed files

gcc version: gcc version 11.0.0 20210116 (experimental)
target: x86_64-pc-linux-gnu
build options: -disable-multilib --enable-languages=c,c++,fortran,lto,objc
--no-create --no-recursion

g++ produces an internal compiler error when combining strings and module
partitions (code attached). The error is not produced if the constructor of A
is changed from a std::string to an int or if the code is written without a
module partition.

g++ -std=c++20 -fmodules-ts -c -save-temps A.cpp Test.cpp
Test.cpp:1:9: internal compiler error: in insert, at cp/module.cc:4888
    1 | export module Test;
      |         ^~~~~~
0x699623 trees_out::insert(tree_node*, walk_kind)
        ../.././gcc/cp/module.cc:4888
0xa119ee trees_out::add_indirects(tree_node*)
        ../.././gcc/cp/module.cc:7303
0xa14e50 trees_out::decl_node(tree_node*, walk_kind)
        ../.././gcc/cp/module.cc:8647
0xa15a42 trees_out::tree_node(tree_node*)
        ../.././gcc/cp/module.cc:9149
0xa15f0d trees_out::vec_chained_decls(tree_node*)
        ../.././gcc/cp/module.cc:4976
0xa19e1b trees_out::write_class_def(tree_node*)
        ../.././gcc/cp/module.cc:11712
0xa1baec depset::hash::find_dependencies()
        ../.././gcc/cp/module.cc:13202
0xa1bec4 module_state::write(elf_out*, cpp_reader*)
        ../.././gcc/cp/module.cc:17568
0xa1d19c finish_module_processing(cpp_reader*)
        ../.././gcc/cp/module.cc:19747
0x9b164b c_parse_final_cleanups()
        ../.././gcc/cp/decl2.c:5178
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++/98707] ICE using std::string in a module partition

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98707

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |nathan at gcc dot gnu.org
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-01-18

[Bug c++/98707] ICE using std::string in a module partition

[practicaldesignbook at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98707

--- Comment #1 from Adam Singer <practicaldesignbook at gmail dot com> ---
The build from February 23, 2021, gcc version 11.0.0 20210223 (experimental), 
fixes this bug.

[Bug c++/98707] ICE using std::string in a module partition

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98707

Nathan Sidwell <nathan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
thanks for the update, closing