-Wdangling-reference warnings in llvm/lib/Object/

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/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp: In instantiation of ‘llvm::Expected<llvm::MapVector<const typename ELFT::Shdr*, const typename ELFT::Shdr*> > llvm::object::ELFFile<ELFT>::getSectionAndRelocations(std::function<llvm::Expected<bool>(const typename ELFT::Shdr&)>) const [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>; typename ELFT::Shdr = llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, false> >]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:986:51:   required from here
  986 | template class LLVM_EXPORT_TEMPLATE llvm::object::ELFFile<ELF32LE>;
      |                                                   ^~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, false> > >](), 0)’
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp: In instantiation of ‘llvm::Expected<llvm::MapVector<const typename ELFT::Shdr*, const typename ELFT::Shdr*> > llvm::object::ELFFile<ELFT>::getSectionAndRelocations(std::function<llvm::Expected<bool>(const typename ELFT::Shdr&)>) const [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>; typename ELFT::Shdr = llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, false> >]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:987:51:   required from here
  987 | template class LLVM_EXPORT_TEMPLATE llvm::object::ELFFile<ELF32BE>;
      |                                                   ^~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, false> > >](), 0)’
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp: In instantiation of ‘llvm::Expected<llvm::MapVector<const typename ELFT::Shdr*, const typename ELFT::Shdr*> > llvm::object::ELFFile<ELFT>::getSectionAndRelocations(std::function<llvm::Expected<bool>(const typename ELFT::Shdr&)>) const [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>; typename ELFT::Shdr = llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, true> >]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:988:51:   required from here
  988 | template class LLVM_EXPORT_TEMPLATE llvm::object::ELFFile<ELF64LE>;
      |                                                   ^~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, true> > >](), 0)’
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~~~~
[ 43%] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/IRSymtab.cpp.o
[ 43%] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/MachOObjectFile.cpp.o
[ 43%] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/MachOUniversal.cpp.o
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp: In instantiation of ‘llvm::Expected<llvm::MapVector<const typename ELFT::Shdr*, const typename ELFT::Shdr*> > llvm::object::ELFFile<ELFT>::getSectionAndRelocations(std::function<llvm::Expected<bool>(const typename ELFT::Shdr&)>) const [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>; typename ELFT::Shdr = llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, true> >]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:989:51:   required from here
  989 | template class LLVM_EXPORT_TEMPLATE llvm::object::ELFFile<ELF64BE>;
      |                                                   ^~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELF.cpp:949:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, true> > >](), 0)’
  949 |   for (const Elf_Shdr &Sec : cantFail(this->sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~~~~
[ 43%] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/Minidump.cpp.o
[ 43%] Linking CXX static library ../../../libLLVMAArch64Desc.a
[ 43%] Built target LLVMAArch64Desc
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::VersionEntry> > readDynsymVersionsImpl(const llvm::object::ELFFile<ELFT>&, llvm::object::ELFObjectFileBase::elf_symbol_iterator_range) [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>; llvm::object::ELFObjectFileBase::elf_symbol_iterator_range = llvm::iterator_range<llvm::object::elf_symbol_iterator>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1008:34:   required from here
 1008 |     return readDynsymVersionsImpl(Obj->getELFFile(), Symbols);
      |            ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, false> > >](), 0)’
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~
[ 43%] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/ModuleSymbolTable.cpp.o
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::VersionEntry> > readDynsymVersionsImpl(const llvm::object::ELFFile<ELFT>&, llvm::object::ELFObjectFileBase::elf_symbol_iterator_range) [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>; llvm::object::ELFObjectFileBase::elf_symbol_iterator_range = llvm::iterator_range<llvm::object::elf_symbol_iterator>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1010:34:   required from here
 1010 |     return readDynsymVersionsImpl(Obj->getELFFile(), Symbols);
      |            ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, false> > >](), 0)’
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::VersionEntry> > readDynsymVersionsImpl(const llvm::object::ELFFile<ELFT>&, llvm::object::ELFObjectFileBase::elf_symbol_iterator_range) [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>; llvm::object::ELFObjectFileBase::elf_symbol_iterator_range = llvm::iterator_range<llvm::object::elf_symbol_iterator>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1012:34:   required from here
 1012 |     return readDynsymVersionsImpl(Obj->getELFFile(), Symbols);
      |            ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, true> > >](), 0)’
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::VersionEntry> > readDynsymVersionsImpl(const llvm::object::ELFFile<ELFT>&, llvm::object::ELFObjectFileBase::elf_symbol_iterator_range) [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>; llvm::object::ELFObjectFileBase::elf_symbol_iterator_range = llvm::iterator_range<llvm::object::elf_symbol_iterator>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1013:32:   required from here
 1013 |   return readDynsymVersionsImpl(cast<ELF64BEObjectFile>(this)->getELFFile(),
      |          ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1014 |                                 Symbols);
      |                                 ~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:3: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |   ^~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:957:38: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, true> > >](), 0)’
  957 |   for (const Elf_Shdr &Sec : cantFail(EF.sections())) {
      |                              ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::BBAddrMap> > readBBAddrMapImpl(const llvm::object::ELFFile<ELFT>&, std::optional<unsigned int>, std::vector<llvm::object::PGOAnalysisMap>*) [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1021:29:   required from here
 1021 |     return readBBAddrMapImpl(Obj->getELFFile(), TextSectionIndex, PGOAnalyses);
      |            ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:15: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  901 |   const auto &Sections = cantFail(EF.sections());
      |               ^~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:34: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, false> > >](), 0)’
  901 |   const auto &Sections = cantFail(EF.sections());
      |                          ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::BBAddrMap> > readBBAddrMapImpl(const llvm::object::ELFFile<ELFT>&, std::optional<unsigned int>, std::vector<llvm::object::PGOAnalysisMap>*) [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1023:29:   required from here
 1023 |     return readBBAddrMapImpl(Obj->getELFFile(), TextSectionIndex, PGOAnalyses);
      |            ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:15: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  901 |   const auto &Sections = cantFail(EF.sections());
      |               ^~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:34: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::little, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::little, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::little, true> > >](), 0)’
  901 |   const auto &Sections = cantFail(EF.sections());
      |                          ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::BBAddrMap> > readBBAddrMapImpl(const llvm::object::ELFFile<ELFT>&, std::optional<unsigned int>, std::vector<llvm::object::PGOAnalysisMap>*) [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1025:29:   required from here
 1025 |     return readBBAddrMapImpl(Obj->getELFFile(), TextSectionIndex, PGOAnalyses);
      |            ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:15: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  901 |   const auto &Sections = cantFail(EF.sections());
      |               ^~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:34: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, false> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, false>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, false> > >](), 0)’
  901 |   const auto &Sections = cantFail(EF.sections());
      |                          ~~~~~~~~^~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp: In instantiation of ‘llvm::Expected<std::vector<llvm::object::BBAddrMap> > readBBAddrMapImpl(const llvm::object::ELFFile<ELFT>&, std::optional<unsigned int>, std::vector<llvm::object::PGOAnalysisMap>*) [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>]’:
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:1026:27:   required from here
 1026 |   return readBBAddrMapImpl(cast<ELF64BEObjectFile>(this)->getELFFile(),
      |          ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1027 |                            TextSectionIndex, PGOAnalyses);
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:15: warning: possibly dangling reference to a temporary [-Wdangling-reference]
  901 |   const auto &Sections = cantFail(EF.sections());
      |               ^~~~~~~~
/home/user/CLionProjects/llvm-project/llvm/lib/Object/ELFObjectFile.cpp:901:34: note: the temporary was destroyed at the end of the full expression ‘llvm::cantFail<ArrayRef<object::Elf_Shdr_Impl<object::ELFType<llvm::endianness::big, true> > > >(llvm::object::ELFFile<ELFT>::sections() const [with ELFT = llvm::object::ELFType<llvm::endianness::big, true>; typename ELFT::ShdrRange = llvm::ArrayRef<llvm::object::Elf_Shdr_Impl<llvm::object::ELFType<llvm::endianness::big, true> > >](), 0)’
  901 |   const auto &Sections = cantFail(EF.sections());
      |                          ~~~~~~~~^~~~~~~~~~~~~~~

I am using gcc (GCC) 14.2.1 20240910 on Manjaro Linux.

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There are also lots of these in llvm/tools/llvm-readobj/