[Bug c++/98054] New: ICE: in pp_cxx_trait_expression, at cp/cxx-pretty-print.c:2671

[foss at grueninger dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98054

            Bug ID: 98054
           Summary: ICE: in pp_cxx_trait_expression, at
                    cp/cxx-pretty-print.c:2671
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: foss at grueninger dot de
  Target Milestone: ---

Created attachment 49646
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49646&action=edit
Dumped file with -save-temps

When compiling a C++ project with G++11, that works fine with G++ 10 and
Clang++, I get the following output:

In file included from
/home/kiko/dune/complete/dune-functions/dune/functions/common/test/polymorphicsmallobjecttest.cc:7:
/home/kiko/dune/complete/dune-functions/dune/functions/common/polymorphicsmallobject.hh:
In instantiation of ‘class Dune::Functions::PolymorphicSmallObject<Base, 0>’:
/usr/include/c++/11/type_traits:971:25:   in pp_cxx_trait_expression, at
cp/cxx-pretty-print.c:2671
   44 | class PolymorphicSmallObject
      |       ^~~~~~~~~~~~~~~~~~~~~~
0x7f4b1a4c4349 __libc_start_main
        ???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://bugs.opensuse.org/> for instructions.

More details regarding my G++ 11:
>g++-11 -v
Using built-in specs.
COLLECT_GCC=g++-11
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/11/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,ada,go,d
--enable-offload-targets=nvptx-none=/usr/nvptx-none,amdgcn-amdhsa=/usr/amdgcn-amdhsa,
--without-cuda-driver --enable-checking=release --disable-werror
--with-gxx-include-dir=/usr/include/c++/11 --enable-ssp --disable-libssp
--disable-libvtv --enable-cet=auto --disable-libcc1 --disable-plugin
--with-bugurl=https://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--with-slibdir=/lib64 --with-system-zlib --enable-libstdcxx-allocator=new
--disable-libstdcxx-pch --enable-libphobos
--enable-version-specific-runtime-libs --with-gcc-major-version-only
--enable-linker-build-id --enable-linux-futex --enable-gnu-indirect-function
--program-suffix=-11 --without-system-libunwind --enable-multilib
--with-arch-32=x86-64 --with-tune=generic --build=x86_64-suse-linux
--host=x86_64-suse-linux
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201127 (experimental) [revision
67138ea1b041fe1637da6b3568f064f172d9358c] (SUSE Linux)

== How to reproduce ==
With -save-temps I dumped the file and attached it. With the following command
line, I can reproduce the problem:
> /usr/bin/g++-11 -DENABLE_MPI=1 -DENABLE_SUITESPARSE=1 -DENABLE_SUPERLU=1 -DENABLE_TBB=1 -DENABLE_UG=1 -DHAVE_CONFIG_H -DMETIS_API_VERSION=5 -DMPICH_SKIP_MPICXX -DMPIPP_H -DMPI_NO_CPPBIND -DModelP -DOMPI_SKIP_MPICXX -DUG_USE_NEW_DIMENSION_DEFINES -D_TBB_CPP0X -I/home/kiko/dune/complete/dune-functions/build-cmake -I/home/kiko/dune/complete/dune-functions -I/usr/include/python3.6m -I/home/kiko/dune/complete/dune-common -I/home/kiko/dune/complete/dune-uggrid -I/home/kiko/dune/complete/dune-geometry -I/home/kiko/dune/complete/dune-grid -I/home/kiko/dune/complete/dune-typetree -I/home/kiko/dune/complete/dune-istl -I/home/kiko/dune/complete/dune-localfunctions -isystem /usr/lib64/mpi/gcc/openmpi/include -isystem /usr/include/suitesparse -isystem /home/kiko/dune/zusatz/parmetis-4.0.3/include -isystem /home/kiko/dune/zusatz/metis-5.1.0/include -std=c++17  -Wall -Wunused -Wmissing-include-dirs -Wcast-align -Wno-sign-compare -Wno-cast-align -Wall -pedantic -Wno-inconsistent-missing-override -O2 -Wno-unused-parameter -fno-strict-aliasing -fstrict-overflow -g -fPIE -pthread -o CMakeFiles/polymorphicsmallobjecttest.dir/polymorphicsmallobjecttest.cc.o -c polymorphicsmallobjecttest.cc.ii