Bug #71910 [Opn->Fbk]: Too many concatinations in a single statement crashes Apache

Edit report at https://bugs.php.net/bug.php?id=71910&edit=1 ID: 71910 Updated by: ab@php.net Reported by: ksours at internebrands dot com Summary: Too many concatinations in a single statement crashes Apache -Status: Open +Status: Feedback Type: Bug Package: Apache2 related Operating System: Windows7 64bit PHP Version: 7.0.4 Block user comment: N Private report: N New Comment: Thanks for the check. It is most likely not an issue in PHP. I've two suggestions how to fix it - set TheadStackSize directive as described here https://httpd.apache.org/docs/current/en/mod/mpm_common.html#threadstacksize , or - if you have Visual Studio installed, use the editbin tool to increase the stack size in httpd.exe With the screenshots - yeah, most of them are still compatible, but not all :(. Would you be interested to contribute? If so, a PR can be provided here https://github.com/php/web-bugs/blob/master/www/bugs-generating-backtrace-win32.php Thanks. Previous Comments: ------------------------------------------------------------------------ [2016-04-04 22:42:49] ksours at internebrands dot com Also note that the screen shots in your debug doc are out of date. The new tool has a separate analysis app (and you need to set the debug symbols in both) ------------------------------------------------------------------------ [2016-04-04 22:41:16] ksours at internetbrands dot com Note that I've removed a large number of repeated lines because its quite long and I think you get the message. Total line count of the traces is 2508. Entry point libhttpd!ap_run_generate_log_id+3db0 Create time 4/4/2016 6:15:01 PM Time spent in user mode 0 Days 00:00:00.000 Time spent in kernel mode 0 Days 00:00:00.031 This thread is not fully resolved and may or may not be a problem. Further analysis of these threads may be required. php7ts!zend_compile_binary_op+10 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 ... php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_binary_op+33 php7ts!zend_compile_expr+155 php7ts!zend_compile_assign+a5 php7ts!zend_compile_expr+125 php7ts!zend_compile_stmt+162 php7ts!zend_compile_top_stmt+23 php7ts!zend_compile_top_stmt+9c php7ts!compile_file+17e php7ts!phar_compile_file+30c php7ts!zend_execute_scripts+86 php7ts!php_execute_script+4c6 php7apache2_4!php_handler+579 libhttpd!ap_run_handler+35 libhttpd!ap_invoke_handler+110 libhttpd!ap_internal_redirect_handler+29a libhttpd!ap_process_request+17 libhttpd!ap_byterange_filter+152f libhttpd!ap_run_process_connection+35 libhttpd!ap_run_generate_log_id+3f24 kernel32!BaseThreadInitThunk+d ntdll!RtlUserThreadStart+1d Exception Information PHP7TS!ZEND_COMPILE_BINARY_OP+10In httpd__PID__11296__Date__04_04_2016__Time_06_16_39PM__900__Second_Chance_Exception_C00000FD.dmp the assembly instruction at php7ts!zend_compile_binary_op+10 in C:\programming\applications\php704_64\php7ts.dll from The PHP Group has caused a stack overflow exception (0xC00000FD) when trying to write to memory location 0x02643ff8 on thread 3 ------------------------------------------------------------------------ [2016-03-29 16:33:08] ksours at internetbrands dot com It doesn't seem to matter if its there or not. I left it in because it's weirder that way. I will attempt to download the tool and get the stacktrace. ------------------------------------------------------------------------ [2016-03-29 16:28:49] ab@php.net Yeah, it was linking to an older tool version. I've just updated it, it should be https://www.microsoft.com/en-us/download/details.aspx?id=49924 . Ok, so you mean the presence of exit; is explicitly required to reproduce the crash. I reproduced no issue neither with nor without it, that's why i mentioned it. So it'd be better to see the backtrace it shows for you. Thanks. ------------------------------------------------------------------------ [2016-03-29 15:04:46] ksours at internebrands dot com Attempted to download the diagnostic tool from the link your provided. Got directed here. https://www.microsoft.com/library/errorpages/smarterror.aspx ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=71910 -- Edit this bug report at https://bugs.php.net/bug.php?id=71910&edit=1