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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/109042] New: [13 Regression] ICE in emit_support_tinfo_1,
 at cp/rtti.cc:1584
Date: Mon, 06 Mar 2023 16:00:12 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109042

            Bug ID: 109042
           Summary: [13 Regression] ICE in emit_support_tinfo_1, at
                    cp/rtti.cc:1584
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

g++ 13.0.1 20230305 snapshot (g:6aa1f40a3263741d964ef4716e85a0df5cec83b6) I=
CEs
when compiling the following testcase, reduced from
test/CodeGenCXX/rtti-fundamental.cpp from the clang 15 test suite:

namespace std {
class type_info {
};
}

std::type_info
foo ()
{
  return typeid (void);
}

namespace __cxxabiv1 {
struct __fundamental_type_info {
  virtual ~__fundamental_type_info ();
};

__fundamental_type_info::~__fundamental_type_info ()
{
}
}

% g++-13 -c aohjjmiw.cpp
<built-in>: internal compiler error: in emit_support_tinfo_1, at
cp/rtti.cc:1584
0x75a5ae emit_support_tinfo_1(tree_node*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.1_p20230305/work/gcc-13-20230305/gcc/cp=
/rtti.cc:1584
0xba1794 emit_support_tinfo_1(tree_node*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.1_p20230305/work/gcc-13-20230305/gcc/cp=
/rtti.cc:1553
0xba1794 emit_support_tinfos()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.1_p20230305/work/gcc-13-20230305/gcc/cp=
/rtti.cc:1647
0xa428e0 c_parse_final_cleanups()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.1_p20230305/work/gcc-13-20230305/gcc/cp=
/decl2.cc:4940
0xc79e7f c_common_parse_file()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.1_p20230305/work/gcc-13-20230305/gcc/c-=
family/c-opts.cc:1266=