How to obtain a "non-stripped" executable for producing a usable core-dump

[Ben Johnson]

On 9/13/2016 10:00 PM, Edgar Pettijohn wrote:
>> I'm attempting to capture a core-dump file, and gdb reports
>> > 
>> > warning: core file may not match specified executable file.
>> > 
> I believe this means the core file doesn't match up to the executable. I would delete the core and try to reproduce with your new executable then run gdb with a core that matches.
> 

Thanks so much for the quick reply, Edgar!

That's what I find to be so strange. I am producing the core-dump and
then attempting to run it through gdb immediately thereafter. I just
don't see how the dovecot-lda executable could be changing in the space
of about ten seconds.

I don't know what it's worth, but the "bt full" command, while at the
gdb prompt, produces legible output. I don't see a bunch of "?"
characters, as cautioned about in the bug report instructions.

For example, here's the tail end of the output (is it usable as-is?):

 session_id = 0x14844a489d8 <error: Cannot access memory at address
0x14844a489d8>,
          session_id_prefix = 0x0, local_ip = {family = 0, u = {ip6 =
{__in6_u = {
                  __u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 =
{0, 0, 0, 0, 0, 0, 0, 0},
                  __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}},
remote_ip = {family = 0, u = {
              ip6 = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>,
__u6_addr16 = {0, 0, 0, 0,
                    0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 =
{s_addr = 0}}},
          local_port = 65320, remote_port = 59489, userdb_fields = 0x0,
          flags_override_add = MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT,
          flags_override_remove = (unknown: 0), no_userdb_lookup = 0}
        storage = 0x1
        user_source = 0x56242ac6d3af ""
        destaddr_source = 0x56242ac6d3af ""
        process_euid = 5000
        stderr_rejection = false
        ret = <optimized out>
        c = <optimized out>
        error = MAIL_ERROR_NONE

Thanks in advance for any additional insight that you may be able to
provide!

-Ben