Bug #79818 [NEW]: Segmentation fault in _build_trace_args

From: changochen1 at gmail dot com Operating system: PHP version: 8.0Git-2020-07-09 (Git) Package: Scripting Engine problem Bug Type: Bug Bug description:Segmentation fault in _build_trace_args Description: ------------ Stack dump: --- ==201947==ERROR: MemorySanitizer: SEGV on unknown address 0x00000000007f (pc 0x0000016a6cbe bp 0x000000000031 sp 0x7ffcf03b0220 T201947) ==201947==The signal is caused by a READ memory access. ==201947==Hint: address points to the zero page. #0 0x16a6cbd in _build_trace_args /home/yongheng/php_clean/Zend/zend_exceptions.c:513:30 #1 0x16a6cbd in _build_trace_string /home/yongheng/php_clean/Zend/zend_exceptions.c:569 #2 0x16a6cbd in zim_Exception_getTraceAsString /home/yongheng/php_clean/Zend/zend_exceptions.c:611 #3 0x132af62 in zend_call_function /home/yongheng/php_clean/Zend/zend_execute_API.c #4 0x16a9be0 in zim_Exception___toString /home/yongheng/php_clean/Zend/zend_exceptions.c:663:3 #5 0x132af62 in zend_call_function /home/yongheng/php_clean/Zend/zend_execute_API.c #6 0x132d1b8 in zend_call_known_function /home/yongheng/php_clean/Zend/zend_execute_API.c:871:15 #7 0x169b93c in zend_call_known_instance_method /home/yongheng/php_clean/Zend/zend_API.h:576:2 #8 0x169b93c in zend_call_known_instance_method_with_0_params /home/yongheng/php_clean/Zend/zend_API.h:582 #9 0x169b93c in zend_exception_error /home/yongheng/php_clean/Zend/zend_exceptions.c:923 #10 0x13840ba in zend_execute_scripts /home/yongheng/php_clean/Zend/zend.c:1674:12 #11 0x10ee2f9 in php_execute_script /home/yongheng/php_clean/main/main.c:2537:14 #12 0x178c81f in do_cli /home/yongheng/php_clean/sapi/cli/php_cli.c:955:5 #13 0x1788c0f in main /home/yongheng/php_clean/sapi/cli/php_cli.c:1353:18 #14 0x7f040b509b96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310 #15 0x43f9d9 in _start (/home/yongheng/php_clean/bld/sapi/cli/php+0x43f9d9) MemorySanitizer can not provide additional info. SUMMARY: MemorySanitizer: SEGV /home/yongheng/php_clean/Zend/zend_exceptions.c:513:30 in _build_trace_args ==201947==ABORTING --- Test script: --------------- <? function b ( $a ){ switch ( [ $c ] ) { case header_register_callback ( function () {} ) ; static $a = d ; } } b ( function () { }) ; -- Edit bug report at https://bugs.php.net/bug.php?id=79818&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79818&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79818&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79818&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79818&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79818&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79818&r=support Expected behavior: https://bugs.php.net/fix.php?id=79818&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79818&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79818&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79818&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79818&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79818&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79818&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79818&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79818&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79818&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79818&r=mysqlcfg