Description:
------------
Too long job names result in memory de/allocation errors (GearmanClient). 

This job name works fine:
$validJobName = 'abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789abcde'; // 77 characters

This job name results in memory management errors:
$brokenJobName = 'abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789abcdef'; // 78 characters

The error occurs in PHP 5.3.13 on gentoo linux and in PHP 5.3.2 on Mac OS X.

Reproduce code:
---------------
do anything, only the job name matters!

Expected result:
----------------
A proper Error message / exception would be nice...

Actual result:
--------------
##########################
## Mac OS X / PHP 5.3.2:
##########################
php(27586) malloc: *** error for object 0x1028ec1d0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap

##########################
## gentoo / PHP 5.2.13:
##########################
*** glibc detected *** php: double free or corruption (fasttop): 0x0000000000d59b70 ***
======= Backtrace: =========
/lib/libc.so.6[0x7eff3f14e808]
/lib/libc.so.6(cfree+0x6c)[0x7eff3f15324c]
/usr/lib/libgearman.so.4[0x7eff3e24bb45]
/usr/lib/libgearman.so.4(gearman_task_free+0x75)[0x7eff3e248d17]
/usr/lib/libgearman.so.4[0x7eff3e247f58]
/usr/lib/libgearman.so.4(gearman_client_do_low_background+0x62)[0x7eff3e247fc7]
/usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/gearman.so(zif_gearman_client_do_low_background+0xba)[0x7eff3e4613ec]
/usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so[0x7eff3cd2651d]
php[0x6121e8]
php(execute+0x153)[0x5ff6ce]
/usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so[0x7eff3cd26980]
php(zend_execute_scripts+0x135)[0x5e09ed]
php(php_execute_script+0x1dd)[0x5a3838]
php(main+0xe19)[0x644516]
/lib/libc.so.6(__libc_start_main+0xe6)[0x7eff3f0f9a26]
php[0x452799]
======= Memory map: ========
00400000-008e4000 r-xp 00000000 09:03 4057126                            /usr/lib64/php5/bin/php
00ae3000-00ae4000 r--p 004e3000 09:03 4057126                            /usr/lib64/php5/bin/php
00ae4000-00b1c000 rw-p 004e4000 09:03 4057126                            /usr/lib64/php5/bin/php
00b1c000-01306000 rw-p 00000000 00:00 0                                  [heap]
7eff34000000-7eff34021000 rw-p 00000000 00:00 0 
7eff34021000-7eff38000000 ---p 00000000 00:00 0 
7eff3a5c8000-7eff3a5dd000 r-xp 00000000 09:03 3175226                    /lib64/libgcc_s.so.1
7eff3a5dd000-7eff3a7dc000 ---p 00015000 09:03 3175226                    /lib64/libgcc_s.so.1
7eff3a7dc000-7eff3a7dd000 r--p 00014000 09:03 3175226                    /lib64/libgcc_s.so.1
7eff3a7dd000-7eff3a7de000 rw-p 00015000 09:03 3175226                    /lib64/libgcc_s.so.1
7eff3a7de000-7eff3ab03000 r--p 00000000 09:03 1158054                    /usr/lib64/locale/locale-archive
7eff3ab03000-7eff3ab0e000 r-xp 00000000 09:03 3299520                    /lib64/libnss_files-2.10.1.so
7eff3ab0e000-7eff3ad0d000 ---p 0000b000 09:03 3299520                    /lib64/libnss_files-2.10.1.so
7eff3ad0d000-7eff3ad0e000 r--p 0000a000 09:03 3299520                    /lib64/libnss_files-2.10.1.so
7eff3ad0e000-7eff3ad0f000 rw-p 0000b000 09:03 3299520                    /lib64/libnss_files-2.10.1.so
7eff3ad0f000-7eff3cd0f000 rw-s 00000000 00:07 1441794                    /SYSV00000000 (deleted)
7eff3cd0f000-7eff3cd31000 r-xp 00000000 09:03 3364765                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so
7eff3cd31000-7eff3cf31000 ---p 00022000 09:03 3364765                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so
7eff3cf31000-7eff3cf32000 r--p 00022000 09:03 3364765                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so
7eff3cf32000-7eff3cf37000 rw-p 00023000 09:03 3364765                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/suhosin.so
7eff3cf37000-7eff3cf39000 rw-p 00000000 00:00 0 
7eff3cf39000-7eff3cf4a000 r-xp 00000000 09:03 3210080                    /usr/lib64/libmemcached.so.4.0.0
7eff3cf4a000-7eff3d149000 ---p 00011000 09:03 3210080                    /usr/lib64/libmemcached.so.4.0.0
7eff3d149000-7eff3d14a000 r--p 00010000 09:03 3210080                    /usr/lib64/libmemcached.so.4.0.0
7eff3d14a000-7eff3d14b000 rw-p 00011000 09:03 3210080                    /usr/lib64/libmemcached.so.4.0.0
7eff3d14b000-7eff3d157000 r-xp 00000000 09:03 3242630                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcached.so
7eff3d157000-7eff3d357000 ---p 0000c000 09:03 3242630                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcached.so
7eff3d357000-7eff3d358000 r--p 0000c000 09:03 3242630                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcached.so
7eff3d358000-7eff3d35a000 rw-p 0000d000 09:03 3242630                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcached.so
7eff3d35a000-7eff3d367000 r-xp 00000000 09:03 3321794                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcache.so
7eff3d367000-7eff3d566000 ---p 0000d000 09:03 3321794                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcache.so
7eff3d566000-7eff3d567000 r--p 0000c000 09:03 3321794                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcache.so
7eff3d567000-7eff3d568000 rw-p 0000d000 09:03 3321794                    /usr/lib64/php5/lib/php/extensions/no-debug-non-zts-20060613/memcache.so
7eff3d568000-7eff3d570000 r-xp 00000000 09:03 3108190                    /usr/lib64/libltdl.so.7.2.1
7eff3d570000-7eff3d770000 ---p 00008000 09:03 3108190                    /usr/lib64/libltdl.so.7.2.1
7eff3d770000-7eff3d771000 r--p 00008000 09:03 3108190                    /usr/lib64/libltdl.so.7.2.1
7eff3d771000-7eff3d772000 rw-p 00009000 09:03 3108190                    /usr/lib64/libltdl.so.7.2.1
7eff3d772000-7eff3d8d9000 r-xp 00000000 09:03 3421059                    /usr/lib64/libMagickCore.so.3.0.0
7eff3d8d9000-7eff3dad9000 ---p 00167000 09:03 3421059                    /usr/lib64/libMagickCore.so.3.0.0
7eff3dad9000-7eff3dae9000 r--p 00167000 09:03 3421059                    /usr/lib64/libMagickCore.so.3.0.0
7eff3dae9000-7eff3daf0000 rw-p 00177000 09:03 3421059                    /usr/lib64/libMagickCore.so.3.0.0
7eff3daf0000-7eff3dbd1000 r-xp 00000000 09:03 3420855                    /usr/lib64/libMagickWand.so.3.0.0
7eff3dbd1000-7eff3ddd0000 ---p 000e1000 09:03 3420855                    /usr/lib64/libMagickWand.so.3.0.0Aborted