[Bug c++/107003] New: ICE in mangle_decl, at cp/mangle.cc:4112

["gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107003

            Bug ID: 107003
           Summary: ICE in mangle_decl, at cp/mangle.cc:4112
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Affects versions down to r6, at -O2+ :


$ cat z1.cc
#include <experimental/list>
namespace pmr = std::experimental::pmr;
void f ()
{
  using pl = pmr::list<int>;
  pl a;
  return;
}


$ gcc-13-20220918 -c z1.cc -O2 -flto -fno-weak
during IPA pass: *free_lang_data
In file included from .../include/c++/13.0.0/experimental/list:38,
                 from z1.cc:1:
.../include/c++/13.0.0/experimental/memory_resource:520:11: internal compiler
error: in mangle_decl, at cp/mangle.cc:4112
  520 |     class type final : public memory_resource
      |           ^~~~
0x95d694 mangle_decl(tree_node*)
        ../../gcc/cp/mangle.cc:4111
0x1504062 decl_assembler_name(tree_node*)
        ../../gcc/tree.cc:741
0x1536050 assign_assembler_name_if_needed(tree_node*)
        ../../gcc/tree.cc:856
0x201be6d free_lang_data_in_cgraph
        ../../gcc/ipa-free-lang-data.cc:1064
0x201be6d free_lang_data
        ../../gcc/ipa-free-lang-data.cc:1109
0x201be6d execute
        ../../gcc/ipa-free-lang-data.cc:1176