Clang's general default dwarf version was raised from 4 to 5 in d3b26dea16108c427b19b5480c9edc76edf8f5b4 in llvm-project (Jan 23 2022) before the 14.0.0 branch, but dwarf 5 on Windows seems to not work with either LLDB or GDB. Thus force the default back to 4 here as a temporary workaround, and try to set the default back to 4 for mingw targets in Clang for later releases (https://reviews.llvm.org/D119326).