[Bug gdb/13242] New: MinGW-GDB crash in coff_symtab_read when running child program

[Bug gdb/13242] New: MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

             Bug #: 13242
           Summary: MinGW-GDB crash in coff_symtab_read when running child
                    program
           Product: gdb
           Version: 7.3
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: Hendricks266@gmail.com
    Classification: Unclassified


I am getting a crash in MinGW-GDB 7.3-2 and I was referred here to report it.
Here is a full log, including a backtrace: http://pastebin.com/BWmnFdAr

GDB crashes once I run the target program.

The same error occurs both with the stock MinGW-GDB and a binary I built myself
to output a useful backtrace with CFLAGS containing "-O0 -ggdb -static".

Here is the eduke32.debug.exe I used:
http://dukeworld.duke4.net/eduke32/synthesis/20110928-2047/eduke32_win32_20110928-2047.zip

If it is any use at all, here is the gdb.exe I compiled:
http://hendricks266.duke4.net/stuff/gdb-7.3-2_mingw32_-ggdb_-O0_-static.7z

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

Hendricks266 <Hendricks266 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Hendricks266 at gmail dot
                   |                            |com

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

Hendricks266 <Hendricks266 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P2                          |P1
           Severity|normal                      |critical

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

--- Comment #1 from Hendricks266 <Hendricks266 at gmail dot com> 2011-12-21 21:49:45 UTC ---
GNU gdb (GDB) 7.3
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from t:\games\eduke32\gdb.exe...done.
(gdb) r
Starting program: t:\games\eduke32\gdb.exe --args eduke32.debug.exe
[New Thread 9420.0x2300]
GNU gdb (GDB) 7.3
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from t:\games\eduke32\eduke32.debug.exe...done.
(gdb) r
Starting program: t:\games\eduke32\eduke32.debug.exe 
[New Thread 9420.0x2328]
[New Thread 9420.0xeb4]
[New Thread 9440.0x25e0]

Program received signal SIGSEGV, Segmentation fault.
0x0053793f in coff_symtab_read (symtab_offset=84512, nsyms=799, 
    objfile=0x489a748) at coffread.c:935
935            if (bfd_section->flags & SEC_CODE)
(gdb) bt
#0  0x0053793f in coff_symtab_read (symtab_offset=84512, nsyms=799, 
    objfile=0x489a748) at coffread.c:935
#1  0x00536f54 in coff_symfile_read (objfile=0x489a748, symfile_flags=8)
    at coffread.c:608
#2  0x0040a8a3 in syms_from_objfile (objfile=0x489a748, addrs=0x488d4e0, 
    offsets=0x0, num_offsets=0, add_flags=8) at symfile.c:1020
#3  0x0040aa75 in symbol_file_add_with_addrs_or_offsets (abfd=0x47e54c8, 
    add_flags=8, addrs=0x488d4e0, offsets=0x0, num_offsets=0, flags=2)
    at symfile.c:1123
#4  0x0040ac3a in symbol_file_add_from_bfd (abfd=0x47e54c8, add_flags=8, 
    addrs=0x488d4e0, flags=2) at symfile.c:1216
#5  0x00486b40 in solib_read_symbols (so=0x489a308, flags=8) at solib.c:650
#6  0x00487053 in solib_add (pattern=0x0, from_tty=0, target=0x8d8c20, 
    readsyms=1) at solib.c:956
#7  0x0042621b in handle_inferior_event (ecs=0x246f90c) at infrun.c:3174
#8  0x0042543c in wait_for_inferior (treat_exec_as_sigtrap=0) at infrun.c:2610
#9  0x004248f1 in proceed (addr=2089816591, siggnal=TARGET_SIGNAL_0, step=0)
    at infrun.c:2136
#10 0x0041c5d8 in run_command_1 (args=0x0, from_tty=1, tbreak_at_main=0)
    at infcmd.c:600
#11 0x0041c60e in run_command (args=0x0, from_tty=1) at infcmd.c:610
#12 0x0043d7b7 in do_cfunc (c=0x289e2b8, args=0x0, from_tty=1)
    at ./cli/cli-decode.c:67
#13 0x0043fddb in cmd_func (cmd=0x289e2b8, args=0x0, from_tty=1)
    at ./cli/cli-decode.c:1777
#14 0x004028f4 in execute_command (p=0x244591 "", from_tty=1) at top.c:428
#15 0x004364bc in command_handler (command=0x244590 "") at event-top.c:499
#16 0x004369c3 in command_line_handler (rl=0x2d58e50 "r") at event-top.c:704
#17 0x005e1a83 in rl_callback_read_char () at callback.c:205
#18 0x00435c4b in rl_callback_read_char_wrapper (client_data=0x0)
    at event-top.c:177
#19 0x004363b9 in stdin_event_handler (error=0, client_data=0x0)
    at event-top.c:434
#20 0x00458e57 in handle_file_event (data=...) at event-loop.c:831
#21 0x00458651 in process_event () at event-loop.c:402
#22 0x00458713 in gdb_do_one_event (data=0x0) at event-loop.c:467
#23 0x00422195 in catch_errors (func=0x45865f <gdb_do_one_event>, 
    func_args=0x0, errstring=0x6f86e0 "", mask=6) at exceptions.c:521
#24 0x00458755 in start_event_loop () at event-loop.c:491
#25 0x00435d74 in cli_command_loop () at event-top.c:210
#26 0x00415a7a in current_interp_command_loop () at interps.c:293
#27 0x0040164a in captured_command_loop (data=0x0) at ./main.c:228
#28 0x00422195 in catch_errors (func=0x40163f <captured_command_loop>, 
    func_args=0x0, errstring=0x6dc080 "", mask=6) at exceptions.c:521
#29 0x004024b5 in captured_main (data=0x246ff40) at ./main.c:936
#30 0x00422195 in catch_errors (func=0x401680 <captured_main>, 
    func_args=0x246ff40, errstring=0x6dc080 "", mask=6) at exceptions.c:521
#31 0x004024eb in gdb_main (args=0x246ff40) at ./main.c:945
#32 0x004013e0 in main (argc=3, argv=0x2441c8) at gdb.c:35
(gdb) quit
A debugging session is active.

    Inferior 1 [process 9420] will be killed.

Quit anyway? (y or n)

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

Hendricks266 <Hendricks266 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P1                          |P2
           Severity|critical                    |normal

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[Hendricks266 at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13242

--- Comment #2 from Hendricks266 <Hendricks266 at gmail dot com> 2012-01-19 23:59:41 UTC ---
I was able to work around the bug by adding this snippet at line 935 in
coffread.c:

    if (bfd_section == 0)
        ms_type = mst_unknown;
    else

This probably is not an ideal solution but I have encountered no problems with
it so far.

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=13242

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at sourceware dot org
             Status|NEW                         |WAITING

--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Sorry, nobody got to downloading the bad .exe when it
was still around.  If this is still an issue, I think just
the .exe would be enough to reproduce the bug.

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[Bug gdb/13242] MinGW-GDB crash in coff_symtab_read when running child program

[ssbssa at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=13242

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssbssa at sourceware dot org

--- Comment #4 from Hannes Domani <ssbssa at sourceware dot org> ---
(In reply to Tom Tromey from comment #3)
> Sorry, nobody got to downloading the bad .exe when it
> was still around.  If this is still an issue, I think just
> the .exe would be enough to reproduce the bug.

The file was apparently moved, I found it at this new location:
http://dukeworld.duke4.net/eduke32/synthesis/old/2011/20110928-2047/eduke32_win32_20110928-2047.zip

But I can't reproduce any crash, not even with the compiled gdb he provided.
Maybe I would need a full Duke Nukem 3D copy to reproduce the issue.

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