/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/ is in llvm-5.0-dev 1:5.0.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFAttribute.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFCompileUnit.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFContext.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDataExtractor.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugAbbrev.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugArangeSet.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugAranges.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugFrame.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugInfoEntry.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugLine.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugLoc.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugMacro.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugPubTable.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDebugRangeList.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFDie.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFFormValue.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFGdbIndex.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFRelocMap.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFSection.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFTypeUnit.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFUnit.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFUnitIndex.h
/usr/include/llvm-5.0/llvm/DebugInfo/DWARF/DWARFVerifier.h