Description:
------------
Triggered in commit 1466a0f, compiled with afl-gcc on Debian 8 x64.

Test script:
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https://drive.google.com/file/d/0B3Tl4QiWJUt8dnpucXlpUXlDWWM/view?usp=sharing

Expected result:
----------------
No crash.

Actual result:
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Program received signal SIGILL, Illegal instruction.
0x0000000001eff115 in ZEND_FETCH_CLASS_CONSTANT_SPEC_CONST_CONST_HANDLER ()
    at /home/geeknik/php-src/Zend/zend_vm_execute.h:5721
5721		SAVE_OPLINE();
(gdb) bt
#0  0x0000000001eff115 in ZEND_FETCH_CLASS_CONSTANT_SPEC_CONST_CONST_HANDLER ()
    at /home/geeknik/php-src/Zend/zend_vm_execute.h:5721
#1  0x0000000001ec3903 in execute_ex (ex=<optimized out>)
    at /home/geeknik/php-src/Zend/zend_vm_execute.h:429
#2  0x0000000002394d3a in zend_execute (op_array=op_array@entry=0x7ffff2889000, 
    return_value=return_value@entry=0x0)
    at /home/geeknik/php-src/Zend/zend_vm_execute.h:474
#3  0x0000000001c35c5d in zend_execute_scripts (type=type@entry=8, 
    retval=retval@entry=0x0, file_count=file_count@entry=3)
    at /home/geeknik/php-src/Zend/zend.c:1537
#4  0x0000000001946830 in php_execute_script (primary_file=<optimized out>)
    at /home/geeknik/php-src/main/main.c:2548
#5  0x00000000023a2c6c in do_cli (argc=-225931263, argv=0x2f678c1 <executor_globals+1>)
    at /home/geeknik/php-src/sapi/cli/php_cli.c:997
#6  0x00000000004730c2 in main (argc=-225931263, argv=0x2f2bf40 <cli_sapi_module>)
    at /home/geeknik/php-src/sapi/cli/php_cli.c:1390