Bug 242155

With gdb-debuginfo installed:

Program terminated with signal 11, Segmentation fault.
#0  dwarf_decode_lines (lh=0xa42a900, comp_dir=0x0, abfd=0xa3e3a28, cu=0xbf9bdd18,
    pst=0xa4fb40c) at gdb/dwarf2read.c:6693
6693    gdb/dwarf2read.c: No such file or directory.
        in gdb/dwarf2read.c
(gdb) bt
#0  dwarf_decode_lines (lh=0xa42a900, comp_dir=0x0, abfd=0xa3e3a28, cu=0xbf9bdd18,
    pst=0xa4fb40c) at gdb/dwarf2read.c:6693
#1  0x0815e598 in dwarf2_build_psymtabs (objfile=0xa4eeb30, mainline=0)
    at gdb/dwarf2read.c:1397
#2  0x081540a3 in elf_symfile_read (objfile=0xa4eeb30, mainline=0) at
gdb/elfread.c:609
#3  0x0810bbc2 in syms_from_objfile (objfile=0xa4eeb30, addrs=0xa06b270,
offsets=0x0,
    num_offsets=0, mainline=0, verbo=1) at gdb/symfile.c:830
#4  0x0810bf48 in symbol_file_add_with_addrs_or_offsets (abfd=0xa3e3a28, from_tty=1,
    addrs=0xa06b270, offsets=0x0, num_offsets=0, mainline=0, flags=8)
    at gdb/symfile.c:946
#5  0x0810bf9a in symbol_file_add_with_addrs_or_offsets (abfd=<value optimized out>,
    from_tty=1, addrs=0xa356500, offsets=0x0, num_offsets=0, mainline=0,
    flags=<value optimized out>) at gdb/symfile.c:976
#6  0x08092430 in symbol_add_stub (arg=0x9eddad0) at gdb/solib.c:432
#7  0x08124853 in catch_errors (func=0x8092340 <symbol_add_stub>,
func_args=0x9eddad0,
    errstring=0x824d2f4 "Error while reading shared library symbols:\n", mask=6)
    at gdb/exceptions.c:515
#8  0x080920aa in solib_read_symbols (so=0x9eddad0, from_tty=1) at gdb/solib.c:459
#9  0x08092a12 in solib_add (pattern=0x0, from_tty=1, target=0x832c2a0, readsyms=1)
    at gdb/solib.c:694
#10 0x081173c8 in post_create_inferior (target=0x832c2a0, from_tty=1) at
gdb/infcmd.c:416
#11 0x081174c4 in attach_command (args=0xbf9c0af4 "6131", from_tty=1)
    at gdb/infcmd.c:1938
#12 0x081247c9 in catch_command_errors (command=0x81173f0 <attach_command>,
    arg=0xbf9c0af4 "6131", from_tty=1, mask=6) at gdb/exceptions.c:530
#13 0x0807f1d2 in captured_main (data=0xbf9bf2c4) at gdb/main.c:701
#14 0x08124853 in catch_errors (func=0x807ec10 <captured_main>,
func_args=0xbf9bf2c4,
    errstring=0x8251a49 "", mask=6) at gdb/exceptions.c:515
#15 0x0807ebc1 in gdb_main (args=0xbf9bf2c4) at gdb/main.c:836
#16 0x0807eb85 in main (argc=Cannot access memory at address 0xe
) at gdb/gdb.c:35

Not sure why it doesn't find /usr/src/debug/gdb-6.6/gdb/dwarf2read.c.  Running
gdb in /usr/src/debug/gdb-6.6 gives us:

#0  dwarf_decode_lines (lh=0xa42a900, comp_dir=0x0, abfd=0xa3e3a28, cu=0xbf9bdd18,
    pst=0xa4fb40c) at gdb/dwarf2read.c:6693
6693                  lh->file_names[file - 1].included_p = 1;
(gdb) list
6688                  /* Special operand.  */
6689                  adj_opcode = op_code - lh->opcode_base;
6690                  address += (adj_opcode / lh->line_range)
6691                    * lh->minimum_instruction_length;
6692                  line += lh->line_base + (adj_opcode % lh->line_range);
6693                  lh->file_names[file - 1].included_p = 1;
6694                  if (!decode_for_pst_p)
6695                    {
6696                      if (last_subfile != current_subfile)
6697                        {
(gdb) print lh
$1 = (struct line_header *) 0xa42a900
(gdb) print file
$2 = 1
((gdb) print lh->file_names
$3 = (struct file_entry *) 0x0

Confirming reproducibility besides the reported i386 also on x86_64.
Thanks, it just needs a CVS backport worth the F7 update release:
http://sources.redhat.com/ml/gdb-patches/2007-04/msg00293.html
http://sourceware.org/ml/gdb-cvs/2007-05/msg00099.html

Created attachment 155962 [details]
Reproducer from thunderbird-debuginfo-2.0.0.0-1.fc7.x86_64 .

*** Bug 242432 has been marked as a duplicate of this bug. ***

gdb-6.6-15.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.