Re: [PHP-DEV] 3.0.4 core dump From: Zeev Suraski (bourbon <email protected>)
Date: 10/02/98

At 11:53 02/10/98 -0700, matthew mcglynn wrote:
>
>I've moved this thread to the dev list because I think
>it's of limited appeal. I have not reported a bug yet because
>I believe I have not collected quality data on the crash.
>
>
>Me:
>
>> >This time I built PHP with debugging, so I'm hoping this
>> >core file will be of some use to someone.
>
>Zeev:
>
>> It might be if you make use of it :) You should generate a gdb backtrace
>> and send it to us at php-dev <email protected>, or better yet, submit a bug
>> report on http://ca.php.net/bugs.php3.
>>
>> To generate a backtrace, run
>> gdb /path/to/php/cgi /path/to/corefile
>> and at the gdb prompt type
>> (gdb) bt
>
>I'm happy to do this but unfortunately something is amiss. I
>think I stripped the binary before I installed it. This would
>make a backtrace sort of useless, wouldn't it ? How is
>stripping related to compiling with debug symbols (if at all) ?
>
>My do-conf for this binary:
>./configure
>--with-gd=no
>--with-mysql=/usr/local/mysql
>--with-config-file-path=/usr/local/apache/etc
>--enable-track-vars=yes
>
>The lack of "--enable-debug=no" would indicate that the
>binary was built with debugging, right ? gdb complains
>of no debugging symbols, which is due to the fact that I
>stripped the binary I guess.
>
>Even so, I rebuilt the binary and ran it (unstripped)
>against this core file and it generated the following
>trace -- which I realize may be bogus because the binary
>has changed. For now it's all I've got -- if it core dumps
>again tonight I'll have better info.
>
>warning: exec file is newer than core file.
>Core was generated by `cardbot.php3'.
>Program terminated with signal 11, Segmentation fault.
>#0 0x209ab in _php3_hash_find (ht=0xa7fa4, arKey=0x0, nKeyLength=18,
pData=0xefbfd000) at php3_hash.c:834
>834 HANDLE_NUMERIC(arKey, nKeyLength,
_php3_hash_index_find(ht,idx,pData));
>(gdb) bt
>#0 0x209ab in _php3_hash_find (ht=0xa7fa4, arKey=0x0, nKeyLength=18,
pData=0xefbfd000) at php3_hash.c:834
>#1 0xe1ea in phpparse () at control_structures_inline.h:848
>#2 0x1f01a in php3_parse (yyin=0xa5d24) at main.c:1461
>#3 0x1faa5 in main (argc=3, argv=0xefbfdefc) at main.c:1769
>
>That's all it gives me. I haven't used gdb in 6 years so
>if there's more I can do, please let me know.

The backtrace seems good, even though I can't figure out how it got to that
state. Do you make use of objects in your script? Of user-defined sorting?

Zeev 

--
Zeev Suraski   <zeev <email protected>>
For a PGP public key, finger bourbon <email protected>

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