[Bug ld/9841] avr-ld crashes when -relax is used with ATMega8535 target

[j at uriah dot heep dot sax dot de]

------- Additional Comments From j at uriah dot heep dot sax dot de  2009-02-14 
07:42 -------
The location of the crash is:

Program received signal SIGSEGV, Segmentation fault.
0x080985f0 in elf32_avr_relax_section (abfd=0x821e600, sec=0x826d014,
link_info=0x810ba40, 
    again=0xbfbfe318) at elf32-avr.c:2042
2042                               if (isym->st_value == 
section_offset_of_ret_insn

(The line number still refers to binutils 2.18.)

isym is a NULL pointer here.  The lines around it look like:

2037                            /* Check for local symbols.  */
2038                            isym = (Elf_Internal_Sym *) 
symtab_hdr->contents;
2039                            isymend = isym + symtab_hdr->sh_info;
2040                            for (; isym < isymend; isym++)
2041                             {
2042                               if (isym->st_value == 
section_offset_of_ret_insn
2043                                   && isym->st_shndx == sec_shndx)
2044                                 {
2045                                   deleting_ret_is_safe = 0;
2046                                   if (debug_relax)

and it's in fact already symtab_hdr->contents that is NULL.
symtab_hdr->sh_info is 24 though.  Here's the entire symtab_hdr
entry:

(gdb) p *symtab_hdr
$4 = {sh_name = 1, sh_type = 2, sh_flags = 0, sh_addr = 0, sh_size = 576,
sh_entsize = 16, 
  sh_link = 21, sh_info = 24, sh_offset = 4188, sh_addralign = 4, bfd_section =
0x0, contents = 0x0}
(gdb) p/x *symtab_hdr
$5 = {sh_name = 0x1, sh_type = 0x2, sh_flags = 0x0, sh_addr = 0x0, sh_size =
0x240, sh_entsize = 0x10, 
  sh_link = 0x15, sh_info = 0x18, sh_offset = 0x105c, sh_addralign = 0x4,
bfd_section = 0x0, 
  contents = 0x0}


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bjoern dot m dot haase at
                   |                            |web dot de


http://sourceware.org/bugzilla/show_bug.cgi?id=9841

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