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From: "markmigm at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106820] New: internal compiler error: in
 function_and_variable_visibility [for std::dynamic_pointer_cast use via
 <memory> module]
Date: Fri, 02 Sep 2022 20:48:39 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 12.2.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: markmigm at gmail dot com
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106820

            Bug ID: 106820
           Summary: internal compiler error: in
                    function_and_variable_visibility [for
                    std::dynamic_pointer_cast use via <memory> module]
           Product: gcc
           Version: 12.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: markmigm at gmail dot com
  Target Milestone: ---

Failing command sequence (from a FreeBSD context) for a reduced/small test
case:

// g++12 -std=3Dc++20 -fmodules-ts -xc++-system-header memory
// g++12 -std=3Dc++20 -freport-bug -fmodules-ts -c
gpp12_module_dynamic_pointer_cast_failure.cpp

For:

# more /tmp/ccvYB09K.out
// Target: aarch64-portbld-freebsd14.0
// Configured with: /wrkdirs/usr/ports/lang/gcc12/work/gcc-12.2.0/configure
--disable-multilib --disable-bootstrap --disable-nls
--enable-gnu-indirect-function --enable-host-shared --enable-plugin
--libdir=3D/usr/local/lib/gcc12 --libexecdir=3D/usr/local/libexec/gcc12
--program-suffix=3D12 --with-as=3D/usr/local/bin/as --with-gmp=3D/usr/local
--with-gxx-include-dir=3D/usr/local/lib/gcc12/include/c++/
--with-gxx-libcxx-include-dir=3D/usr/include/c++/v1 --with-ld=3D/usr/local/=
bin/ld
--with-pkgversion=3D'FreeBSD Ports Collection' --with-system-zlib --without=
-zstd
--enable-languages=3Dc,c++,objc,fortran,jit --prefix=3D/usr/local
--localstatedir=3D/var --mandir=3D/usr/local/man
--infodir=3D/usr/local/share/info/gcc12 --build=3Daarch64-portbld-freebsd14=
.0
// Thread model: posix
// Supported LTO compression algorithms: zlib
// gcc version 12.2.0 (FreeBSD Ports Collection)=20
//=20
// during IPA pass: visibility
// gpp12_module_dynamic_pointer_cast_failure.cpp:21:1: internal compiler er=
ror:
in function_and_variable_visibility, at ipa-visibility.cc:716
//    21 | }
//       | ^
// Please submit a full bug report, with preprocessed source.
// See <https://gcc.gnu.org/bugs/> for instructions.

// /usr/local/libexec/gcc12/gcc/aarch64-portbld-freebsd14.0/12.2.0/cc1plus
-quiet gpp12_module_dynamic_pointer_cast_failure.cpp -quiet -dumpbase
gpp12_module_dynamic_pointer_cast_failure.cpp -dumpbase-ext .cpp
-mlittle-endian -mabi=3Dlp64 -std=3Dc++20 -freport-bug -fmodules-ts -o -
-frandom-seed=3D0 -fdump-noaddr

# 0 "gpp12_module_dynamic_pointer_cast_failure.cpp"
# 0 "<built-in>"
# 0 "<command-line>"
# 1 "gpp12_module_dynamic_pointer_cast_failure.cpp"
# 11 "gpp12_module_dynamic_pointer_cast_failure.cpp"
import  "/usr/local/lib/gcc12/include/c++/memory";

struct data
{
 virtual ~data() =3D default;
};

void test(std::shared_ptr<data> b)
{
 auto dpc =3D std::dynamic_pointer_cast<data>(b);
}=