[Bug gold/10887] New: building memtest86 causes segfault in LD.

[scott dot sourceware dot 2009 at scottrix dot co dot uk]

Using gold from 2.20 to build memtest86-3.4 causes a segfault in LD, back trace 
:

#0  gold::Output_section::add_output_section_data (this=0x0, inp=0xbfffc6dc)
    at ../../binutils-2.20/gold/output.cc:2001
#1  0x0810bfe3 in gold::Output_section::add_output_section_data (this=0x0, 
    posd=0x82dac10) at ../../binutils-2.20/gold/output.cc:1959
#2  0x080cdb75 in void gold::Layout::sized_create_version_sections<32,
false>(gold::Versions const*, gold::Symbol_table const*, unsigned int,
std::vector<gold::Symbol*, std::allocator<gold::Symbol*> > const&,
gold::Output_section const*)
    ()
#3  0x080c63f5 in gold::Layout::finalize (this=0xbfffe930, 
    input_objects=0xbfffed40, symtab=0xbfffead4, target=0x824a820, 
    task=0x82bd868) at ../../binutils-2.20/gold/layout.cc:1555
#4  0x080c65e3 in gold::Layout_task_runner::run (this=0x82bd080, 
    workqueue=0xbfffee04, task=0x82bd868)
    at ../../binutils-2.20/gold/layout.cc:140
#5  0x080b462f in gold::Task_function::run (this=0x82bd868, 
    workqueue=0xbfffee04) at ../../binutils-2.20/gold/workqueue.h:178
#6  0x08192f89 in gold::Workqueue::find_and_run_task (this=0xbfffee04, 
    thread_number=0) at ../../binutils-2.20/gold/workqueue.cc:314
#7  0x0819321c in gold::Workqueue::process (this=0xbfffee04, thread_number=0)
    at ../../binutils-2.20/gold/workqueue.cc:480
#8  0x0804bc64 in main (argc=65536, argv=0x10001)
    at ../../binutils-2.20/gold/main.cc:246


It appears that in the Layout::sized_create_version_sections function the first
thing is does is:

  Output_section* vsec = this->choose_output_section(NULL, ".gnu.version",
                       elfcpp::SHT_GNU_versym,
                       elfcpp::SHF_ALLOC,
                       false);

which can return NULL, then a few lines down it does:

  vsec->add_output_section_data(vdata);

which fails because vsec is NULL.

Upgrading to snapshot from 20091102 I now get the error:

internal error in address, at output.h:126

This doesn't trap in gdb, please let me know what extra information you need.

-- 
           Summary: building memtest86 causes segfault in LD.
           Product: binutils
           Version: 2.21 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gold
        AssignedTo: ian at airs dot com
        ReportedBy: scott dot sourceware dot 2009 at scottrix dot co dot uk
                CC: bug-binutils at gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=10887

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