[Bug c++/107083] New: internal compiler error: in core_vals, at cp/module.cc:6127

["karl.weber99 at gmx dot net" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107083

            Bug ID: 107083
           Summary: internal compiler error: in core_vals, at
                    cp/module.cc:6127
           Product: gcc
           Version: 12.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: karl.weber99 at gmx dot net
  Target Milestone: ---

Created attachment 53639
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53639&action=edit
Output of compiler due to option -freport-bug

Environment: openSUSE 15.3 linux system.

I downloaded fmt::format from https://github.com/fmtlib/fmt/ and tried to
compile the header file fmt/core.h of this package with

g++ -freport-bug -fmodules-ts -std=c++20 -c -x c++-system-header fmt/core.h

The output of the compiler is

/usr/local/include/fmt/core.h: internal compiler error: in core_vals, at
cp/module.cc:6127
0x407d0d trees_out::core_vals(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:6127
0x54143b trees_out::tree_node_vals(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:7073
0x54143b trees_out::tree_value(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:8910
0x53a43c trees_out::tree_node(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:9108
0x53ddf5 trees_out::core_vals(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:6036
0x53e460 trees_out::tree_node_vals(tree_node*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:7073
0x53f35b trees_out::decl_value(tree_node*, depset*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:7652
0x53f9f1 depset::hash::find_dependencies(module_state*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:13139
0x53ff86 module_state::write(elf_out*, cpp_reader*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:17629
0x541290 finish_module_processing(cpp_reader*)
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/module.cc:19886
0x4ed14b c_parse_final_cleanups()
        ../../gcc_12.2/gcc-12.2.0/gcc/cp/decl2.cc:5342
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