[Bug c++/102067] SEGFAULT in varpool_node::get_constructor during lto1 when optimising or not using debug symbols

["marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102067

--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Matt Godbolt from comment #13)
> Both attached. When they're built they're built with:
> 
> ```
> /home/mgodbolt/dev/wave/cmake-build-release/env/bin/x86_64-conda_cos6-linux-
> gnu-g++ -DSPDLOG_FMT_EXTERNAL -Igenerated -I../src
> -I../src/wave/common/../.. -Isrc/wave -I../src/wave/.. -isystem env/include
> -O3 -DNDEBUG -flto -fno-fat-lto-objects   -include
> /home/mgodbolt/dev/wave/cmake-build-release/conda_env.hpp -fconcepts -Wall
> -Wextra -Werror -g -fPIC -fvisibility-inlines-hidden -march=skylake
> -Wconversion -Wsign-conversion -Wnon-virtual-dtor -Wold-style-cast
> -Wpedantic -Wuseless-cast -Wdouble-promotion -Wcast-align -Wduplicated-cond
> -Wlogical-op -Wrestrict -Wnull-dereference -pedantic -std=gnu++17 -MD -MT
> src/wave/common/CMakeFiles/wave_common.dir/App.cpp.o -MF
> src/wave/common/CMakeFiles/wave_common.dir/App.cpp.o.d -o
> src/wave/common/CMakeFiles/wave_common.dir/App.cpp.o -c
> ../src/wave/common/App.cpp
> ```
> 
> The attachments were created by putting -E at the end of the line, changing
> the `-o` location, then gzipping the output.

Thanks for it, unfortunately, I can't reproduce it with:

$ g++ -O3 -DNDEBUG -flto -fno-fat-lto-objects  -fconcepts -Wall -Wextra -Werror
-g -fPIC -fvisibility-inlines-hidden -march=skylake -Wconversion
-Wsign-conversion -Wnon-virtual-dtor -Wold-style-cast -Wpedantic -Wuseless-cast
-Wdouble-promotion -Wcast-align -Wduplicated-cond -Wlogical-op -Wrestrict
-Wnull-dereference -pedantic -std=gnu++17 App.ii Sentry.ii -c
$ g++ Sentry.o App.o -shared -flto

with:

gcc --version
gcc (GCC) 9.4.1 20210825

Can you please try reproducing it locally with the 2 pre-processed file.
And can you please share the full linker command line (I posted only the lto1
invocation).