Bug in file bfd/elf.c, function elf_map_symbols()

[Dietmar Petras]

I'm wondering about the following code segment in file bfd/elf.c, function
elf_map_symbols():

                  if (sec->output_offset != 0)
                    continue;

                  sec = sec->output_section;

                  /* Empty sections in the input files may have had a
                     section symbol created for them.  (See the comment
                     near the end of _bfd_generic_link_output_symbols in
                     linker.c).  If the linker script discards such
                     sections then we will reach this point.  Since we know
                     that we cannot avoid this case, we detect it and skip
                     the abort and the assignment to the sect_syms array.
                     To reproduce this particular case try running the
                     linker testsuite test ld-scripts/weak.exp for an ELF
                     port that uses the generic linker.  */
                  if (sec->owner == NULL)
                    continue;


The commands "if (sec->owner == NULL)" lead to a segmentation fault for
sure, since sec has been tested for NULL before.

Kind regards,

Dietmar

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