Bug #66474 [Opn]: end of script before headers = error 500

Edit report at https://bugs.php.net/bug.php?id=66474&edit=1 ID: 66474 Updated by: dmitry@php.net Reported by: phpdev at ehrhardt dot nl Summary: end of script before headers = error 500 Status: Open Type: Bug Package: opcache Operating System: Any PHP Version: 5.5.8 Block user comment: N Private report: N New Comment: The minimal script that triggers the problem: <?php function foo() { $speed = 'slow' || 'fast'; } foo(); ?> It doesn't crash, but valgrind shows the source of the error ==12278== Invalid read of size 1 ==12278== at 0x4C1E335: accel_new_interned_string (zend_hash.h:282) ==12278== by 0x4C252AD: zend_persist_zval_calc (zend_persist_calc.c:107) ==12278== by 0x4C258F9: zend_persist_op_array_calc.part.2 (zend_persist_calc.c:148) ==12278== by 0x4C250D2: zend_hash_persist_calc (zend_persist_calc.c:79) ==12278== by 0x4C25971: zend_accel_script_persist_calc (zend_persist_calc.c:337) ==12278== by 0x4C1F78B: compile_and_cache_file.constprop.19 (ZendAccelerator.c:1167) ==12278== by 0x4C20291: persistent_compile_file (ZendAccelerator.c:1634) ==12278== by 0x838B57C: zend_execute_scripts (zend.c:1308) ==12278== by 0x832CAAA: php_execute_script (main.c:2506) ==12278== by 0x8434E46: do_cli (php_cli.c:994) ==12278== by 0x806F91C: main (php_cli.c:1378) ==12278== Address 0x4d04c30 is 0 bytes inside a block of size 5 free'd ==12278== at 0x4007B21: free (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==12278== by 0x8381407: convert_to_boolean (zend_operators.c:543) ==12278== by 0x4C2B252: zend_optimize_block (block_pass.c:1059) ==12278== by 0x4C2F5EC: zend_optimizer (block_pass.c:2060) ==12278== by 0x837F033: zend_llist_apply_with_argument (zend_llist.c:234) ==12278== by 0x8380307: pass_two (zend_opcode.c:670) ==12278== by 0x8373FEA: zend_do_end_function_declaration (zend_compile.c:1811) ==12278== by 0x83550C5: zendparse (zend_language_parser.y:382) ==12278== by 0x8356149: compile_file (zend_language_scanner.l:588) ==12278== by 0x82347BC: phar_compile_file (phar.c:3383) ==12278== by 0x4C1F5A4: compile_and_cache_file.constprop.19 (ZendAccelerator.c:1388) ==12278== by 0x4C20291: persistent_compile_file (ZendAccelerator.c:1634) Previous Comments: ------------------------------------------------------------------------ [2014-01-13 04:44:06] phpdev at ehrhardt dot nl Changed OS into 'Any' ------------------------------------------------------------------------ [2014-01-13 04:42:26] phpdev at ehrhardt dot nl I reproduced the bug on a CentOS 5 server, with PHP 5.4 NTS loaded as mod_fcgid and opcache.so compiled with the currect GIT head sources. So this bug is not Windows specific! The Superfish 7.x-1.9 can be found here: https://drupal.org/project/superfish ------------------------------------------------------------------------ [2014-01-12 22:42:58] phpdev at ehrhardt dot nl Description: ------------ Enable superfish 7.x-1.9 in any Drupal 7 site and run it with php-cgi.exe from PHP NTS 5.4.24 or PHP 5.5.7+ (x86 or x64) and php_opcache.dll with the recommended settings. You will get an internal server error 500, due to 'End of script output before headers: php-cgi.exe'. Culprit are the changes in block_pass.c in this patch: https://github.com/zendtech/ZendOptimizerPlus/commit/b73b6a5559d6ca4925a09ed284a4e93be06726ed Reverting those changes resolves this issue, but might undo the fix for bug #66176. Expected result: ---------------- No end of script output before headers Actual result: -------------- End of script output before headers ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66474&edit=1