Link error when compiling with -fsanitize=undefined

[Scott Kostyshak]

I was curious about compiling with -fsanitize=undefined.

When building (with CMake), I get the following:

[ 93%] Linking CXX executable ../../bin/tex2lyx
cd /home/scott/lyxbuilds/master/CMakeBuild/src/tex2lyx && /usr/bin/cmake -E cmake_link_script CMakeFiles/tex2lyx.dir/link.txt --verbose=1
/usr/lib/ccache/c++ -Wall -Wextra -Wno-deprecated-copy --std=c++20 -DENABLE_ASSERTIONS=1 -fsanitize=undefined -fno-strict-aliasing  -O0 -g3 -D_DEBUG  -fsanitize=undefined -rdynamic CMakeFiles/tex2lyx.dir/Context.cpp.o CMakeFiles/tex2lyx.dir/Parser.cpp.o CMakeFiles/tex2lyx.dir/Preamble.cpp.o CMakeFiles/tex2lyx.dir/boost.cpp.o CMakeFiles/tex2lyx.dir/dummy_impl.cpp.o CMakeFiles/tex2lyx.dir/math.cpp.o CMakeFiles/tex2lyx.dir/table.cpp.o CMakeFiles/tex2lyx.dir/tex2lyx.cpp.o CMakeFiles/tex2lyx.dir/text.cpp.o CMakeFiles/tex2lyx.dir/__/graphics/GraphicsParams.cpp.o CMakeFiles/tex2lyx.dir/__/insets/ExternalTemplate.cpp.o CMakeFiles/tex2lyx.dir/__/insets/ExternalTransforms.cpp.o CMakeFiles/tex2lyx.dir/__/insets/InsetLayout.cpp.o CMakeFiles/tex2lyx.dir/__/Author.cpp.o CMakeFiles/tex2lyx.dir/__/CiteEnginesList.cpp.o CMakeFiles/tex2lyx.dir/__/Color.cpp.o CMakeFiles/tex2lyx.dir/__/Counters.cpp.o CMakeFiles/tex2lyx.dir/__/Encoding.cpp.o CMakeFiles/tex2lyx.dir/__/FloatList.cpp.o CMakeFiles/tex2lyx.dir/__/Floating.cpp.o CMakeFiles/tex2lyx.dir/__/FontInfo.cpp.o CMakeFiles/tex2lyx.dir/__/LaTeXPackages.cpp.o CMakeFiles/tex2lyx.dir/__/Layout.cpp.o CMakeFiles/tex2lyx.dir/__/LayoutFile.cpp.o CMakeFiles/tex2lyx.dir/__/LayoutModuleList.cpp.o CMakeFiles/tex2lyx.dir/__/Lexer.cpp.o CMakeFiles/tex2lyx.dir/__/ModuleList.cpp.o CMakeFiles/tex2lyx.dir/__/TextClass.cpp.o CMakeFiles/tex2lyx.dir/__/Spacing.cpp.o CMakeFiles/tex2lyx.dir/__/version.cpp.o -o ../../bin/tex2lyx  ../../lib/libsupport.a -lmagic /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.15.2 /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.15.2 -lz
/usr/bin/ld: CMakeFiles/tex2lyx.dir/dummy_impl.cpp.o:(.data.rel+0x118): undefined reference to `typeinfo for lyx::xml::FontTag'
collect2: error: ld returned 1 exit status

Any tip on how to solve this?

Scott
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