ius-community team mailing list archive

[Jakov Sosic <jsosic@xxxxxxxxx>]

On 07/27/2015 07:51 PM, Ben Harper wrote:
> Hey Jakov,
>
> Thanks for taking the time to reach out to us about this issue.  Can we
> assume this code and configuration worked with php55u with
> php55u-pecl-memcache?  Also can we assume the code works without the
> memcache module?  Have you tried the memcached module?
>
> With these types of issues, we need to figure out is this an upstream
> issue with the pecl module itself or an issue with the way the module is
> packaged.  While I am not an expert with the memcache module, I don't
> think this is issue with the way we package memcache.
>
> Looking over the output, I do see you are running an older version of
> PHP.  Have you tried with php56u-5.6.11?
>
> Looking over bugs for the memache module[0], I don't see anything that
> jumps out at me.  There are a few bugs that mention memcache_pool.c[1],
> but I am not sure if any of those are related.  It might be worth
> looking through those bugs.

I've made a little bit of a progress. I've tracked it down to symfony 1.4:

(gdb) bt
#0  mmc_pool_select (pool=0x7fa0473d4600) at 
/usr/src/debug/php-pecl-memcache-3.0.8/NTS/memcache_pool.c:1422
#1  0x00007fa03091bcb8 in mmc_pool_run (pool=0x7fa0473d4600) at 
/usr/src/debug/php-pecl-memcache-3.0.8/NTS/memcache_pool.c:1674
#2  0x00007fa030915883 in zif_memcache_get (ht=<value optimized out>, 
return_value=<value optimized out>, return_value_ptr=<value optimized 
out>, this_ptr=<value optimized out>,
    return_value_used=<value optimized out>) at 
/usr/src/debug/php-pecl-memcache-3.0.8/NTS/memcache.c:1687
#3  0x00007fa03d28a74c in xdebug_handle_hit_value@plt () from 
/usr/lib64/php/modules/xdebug.so
#4  0x00007fa04753db10 in ?? ()
#5  0x000000004753db10 in ?? ()
#6  0x0000000000000000 in ?? ()

(gdb) print (char *)executor_globals.active_op_array->function_name
$16 = 0x7fa02899a668 "get"

(gdb) print (char *)executor_globals.active_op_array->filename
$17 = 0x7fa028997460 
"/home/dev/site-php56/vendor/symfony/symfony1/lib/cache/sfMemcacheCache.class.php"


This is the PHP function from the file mentioned:

  public function get($key, $default = null)
  {
    $value = $this->memcache->get($this->getOption('prefix').$key);

    return false === $value ? $default : $value;
  }

I guess I'll have to dig a bit deeper to understand what triggers the 
error :-/