[Bug 973172] Re: Internal error in ld (ld.gold)

[Jonas Bülow]

Yes, I know the bug report is very incomplete. The problem is that I don't own the source code beeing compiled/linked. 
I have not managed to create a reproducer. 

Does the error message itself give any clues of whats wrong " internal
error in sized_finalize_symbol" ?

Maybe you could guide me looking for details? If I run the linker in the
debugger and break on the assert I get the following info:


template<int size>
bool
Symbol_table::sized_finalize_symbol(Symbol* unsized_sym)
{
  typedef typename Sized_symbol<size>::Value_type Value_type;

  Sized_symbol<size>* sym =
static_cast<Sized_symbol<size>*>(unsized_sym);

  // The default version of a symbol may appear twice in the symbol
  // table.  We only need to finalize it once.
  if (sym->has_symtab_index())
    return false;

  if (!sym->in_reg())
    {
      gold_assert(!sym->has_symtab_index());
      sym->set_symtab_index(-1U);
      gold_assert(sym->dynsym_index() == -1U);      <==== this is the failing assert


Looking at sym gives:

(gdb) print *sym
$6 = {
  <gold::Symbol> = {
    name_ = 0x22963bb4 "__cxa_finalize", 
    version_ = 0x22963893 "GLIBC_2.2.5", 
    u_ = {
      from_object = {
        object = 0x1f657780, 
        shndx = 0
      }, 
      in_output_data = {
        output_data = 0x1f657780, 
        offset_is_from_end = false
      }, 
      in_output_segment = {
        output_segment = 0x1f657780, 
        offset_base = gold::Symbol::SEGMENT_START
      }
    }, 
    symtab_index_ = 4294967295, 
    dynsym_index_ = 34, 
    got_offsets_ = {
      got_type_ = 4294967295, 
      got_offset_ = 0, 
      got_next_ = 0x0
    }, 
    plt_offset_ = 4294967295, 
    type_ = elfcpp::STT_FUNC, 
    binding_ = elfcpp::STB_WEAK, 
    visibility_ = elfcpp::STV_DEFAULT, 
    nonvis_ = 0, 
    source_ = gold::Symbol::FROM_OBJECT, 
    is_def_ = false, 
    is_forwarder_ = false, 
    has_alias_ = false, 
    needs_dynsym_entry_ = false, 
    in_reg_ = false, 
    in_dyn_ = true, 
    needs_dynsym_value_ = false, 
    has_warning_ = false, 
    is_copied_from_dynobj_ = false, 
    is_forced_local_ = false, 
    is_ordinary_shndx_ = true, 
    in_real_elf_ = true, 
    is_defined_in_discarded_section_ = false, 
    undef_binding_set_ = false, 
    undef_binding_weak_ = false, 
    is_predefined_ = false
  }, 
  members of gold::Sized_symbol<64>: 
  value_ = 0, 
  symsize_ = 0
}

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https://bugs.launchpad.net/bugs/973172

Title:
  Internal error in ld (ld.gold)

Status in “binutils” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading from 11.04 to 11.10 ld fails to link some
  applications:

  /usr/bin/ld: internal error in sized_finalize_symbol, at
  ../../gold/symtab.cc:2663

  Workaround: change ld to point to ld.bfd

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