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[2020-08-10 07:34 UTC] valera dot ymnik at gmail dot com
Description: ------------ After upgrading from 7.4.8 to 7.4.9, a segfault occurs in this example. I was only able to reproduce the problem using an event extension (https://pecl.php.net/package/event). I'm not sure if this is not the event extension issue, but minor updates usually didn't break extensions. In addition, there is a dependence on a static properties of the class, which is loaded into set_exception_handler Test script: --------------- file segafult.php: <?php set_exception_handler(static function ($e) { include 'Test.php'; throw $e; }); $base = new EventBase(); $e = new Event($base, -1, Event::TIMEOUT, static function () { throw new \Exception; }); $e->addTimer(0); $base->loop(); file Test.php: <?php class Test { // public $foo = 'foo'; private function set() { // var_dump(self::$foo); // any use of a static property self::$foo = 'bar'; } } Expected result: ---------------- PHP Fatal error: Uncaught Exception Actual result: -------------- Segmentation fault PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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dbg backtrace: Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000055bf9d77eeb0 in _build_trace_args (str=0x7ffeeeb70370, arg=0x7f42d865cdc8) at ./Zend/zend_exceptions.c:552 552 ./Zend/zend_exceptions.c: No such file or directory. (gdb) bt #0 0x000055bf9d77eeb0 in _build_trace_args (str=0x7ffeeeb70370, arg=0x7f42d865cdc8) at ./Zend/zend_exceptions.c:552 #1 _build_trace_string (num=<optimized out>, ht=<optimized out>, str=0x7ffeeeb70370) at ./Zend/zend_exceptions.c:608 #2 zim_exception_getTraceAsString (execute_data=<optimized out>, return_value=<optimized out>) at ./Zend/zend_exceptions.c:648 #3 0x000055bf9d751729 in zend_call_function (fci=fci@entry=0x7ffeeeb70550, fci_cache=0x7ffeeeb70420, fci_cache@entry=0x0) at ./Zend/zend_execute_API.c:826 #4 0x000055bf9d78082f in zim_exception___toString (execute_data=0x7f42d8613020, return_value=0x7ffeeeb707f0) at ./Zend/zend_exceptions.c:703 #5 0x000055bf9d751729 in zend_call_function (fci=fci@entry=0x7ffeeeb706e0, fci_cache=fci_cache@entry=0x7ffeeeb706c0) at ./Zend/zend_execute_API.c:826 #6 0x000055bf9d77d326 in zend_call_method (object=object@entry=0x7ffeeeb707d0, obj_ce=obj_ce@entry=0x55bf9dc3acf0, fn_proxy=<optimized out>, function_name=function_name@entry=0x55bf9d84a900 "__tostring", function_name_len=function_name_len@entry=10, retval_ptr=retval_ptr@entry=0x7ffeeeb707f0, param_count=0, arg1=0x0, arg2=0x0) at ./Zend/zend_interfaces.c:103 #7 0x000055bf9d5a98d8 in zend_exception_error (ex=0x7f42d867b281, severity=severity@entry=1) at ./Zend/zend_exceptions.c:1007 #8 0x000055bf9d5a9d57 in zend_throw_exception_internal (exception=exception@entry=0x0) at ./Zend/zend_exceptions.c:166 #9 0x000055bf9d751aba in zend_call_function (fci=fci@entry=0x7ffeeeb70960, fci_cache=<optimized out>, fci_cache@entry=0x0) at ./Zend/zend_execute_API.c:876 #10 0x000055bf9d751c65 in _call_user_function_ex (object=object@entry=0x0, function_name=function_name@entry=0x7ffeeeb709b0, retval_ptr=retval_ptr@entry=0x7ffeeeb709c0, param_count=param_count@entry=1, params=params@entry=0x7ffeeeb709d0, no_separation=no_separation@entry=1) at ./Zend/zend_execute_API.c:645 #11 0x000055bf9d5a8b0b in zend_user_exception_handler () at ./Zend/zend.c:1640 #12 0x000055bf9d7608df in zend_execute_scripts (type=type@entry=8, retval=retval@entry=0x0, file_count=file_count@entry=3) at ./Zend/zend.c:1676 #13 0x000055bf9d6fd250 in php_execute_script (primary_file=0x7ffeeeb72f40) at ./main/main.c:2621 #14 0x000055bf9d7f0824 in do_cli (argc=2, argv=0x55bf9db70990) at ./sapi/cli/php_cli.c:964 #15 0x000055bf9d5b96c3 in main (argc=2, argv=0x55bf9db70990) at ./sapi/cli/php_cli.c:1359