[Bug gdb/12517] New: crash on source of .gdbinit in command file

[Bug gdb/12517] New: crash on source of .gdbinit in command file

[karl at freefriends dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12517

           Summary: crash on source of .gdbinit in command file
           Product: gdb
           Version: 7.2
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: karl@freefriends.org


With gdb 7.2, and this file as /home/karl/.gdbinit:

define rerun
source /home/karl/.gdbinit
run
end
set args a.out

I run gdb a.out, where a.out is from hello,world or anything else.
At the (gdb) prompt I say "rer" to run the rerun command, and gdb seg fault. 
Backtrace shows
#1  0x080ff7f3 in locate_arg (p=0x19 <Address 0x19 out of bounds>)              
    at ./cli/cli-script.c:730                                                   
#2  0x080ff8cb in insert_args (line=0x19 <Address 0x19 out of bounds>)          
    at ./cli/cli-script.c:757                                                   
#3  0x080ff085 in execute_control_command (cmd=0x84a6fe8)                       
    at ./cli/cli-script.c:411                                           

This is with gdb 7.2 compiled from the original source on ftp.gnu.org, using
gcc 4.5.1 also compiled from its original source, on an 32-bit x86 GNU/Linux
system (CentOS release 5.4).

FWIW, I've had this "define rerun" in my .gdbinit for, oh, 20 years or so and
it's been working fine until now :).

Thanks,
Karl

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[Bug gdb/12517] crash on source of .gdbinit in command file

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12517

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com

--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2011-04-01 20:54:15 UTC ---
The bug seems to be that gdb frees a command_list while executing it.

One fix would be using counted command lists everywhere, like
breakpoint.c does now.  Then the execution code would hold a reference
to the "rerun" command list.

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[Bug gdb/12517] crash on source of .gdbinit in command file

[ssbssa at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=12517

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssbssa at sourceware dot org
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |13.1
         Resolution|---                         |FIXED

--- Comment #2 from Hannes Domani <ssbssa at sourceware dot org> ---
No longer crashes since gdb-13.1.

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