<?php

register_shutdown_function(function () {});
parse_str("", $_POST);

Program received signal SIGSEGV, Segmentation fault.
0x000055555597b652 in zend_hash_str_find ()
(gdb) bt full
#0  0x000055555597b652 in zend_hash_str_find ()
No symbol table info available.
#1  0x00007ffff7091467 in xdebug_lib_find_in_globals () from /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so
No symbol table info available.
#2  0x00007ffff70a2273 in xdebug_should_ignore () from /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so
No symbol table info available.
#3  0x00007ffff70a2475 in xdebug_debug_init_if_requested_at_startup ()
   from /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so
No symbol table info available.
#4  0x00007ffff708bbc1 in ?? () from /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so
No symbol table info available.
#5  0x00007ffff708c208 in ?? () from /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so
No symbol table info available.
#6  0x0000555555a04533 in ?? ()
No symbol table info available.
#7  0x0000555555956c9b in zend_call_function ()
No symbol table info available.
#8  0x0000555555869778 in ?? ()
No symbol table info available.
#9  0x0000555555978962 in zend_hash_apply ()
No symbol table info available.
#10 0x000055555586f166 in php_call_shutdown_functions ()
No symbol table info available.

==29315== Memcheck, a memory error detector
==29315== Copyright (C) 2002-2024, and GNU GPL'd, by Julian Seward et al.
==29315== Using Valgrind-3.23.0 and LibVEX; rerun with -h for copyright info
==29315== Command: php html/a-testing/superpassword.php
==29315== 
==29315== Use of uninitialised value of size 8
==29315==    at 0x683652: zend_hash_str_find (in /usr/local/bin/php)
==29315==    by 0x5A92466: xdebug_lib_find_in_globals (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3272: xdebug_should_ignore (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3474: xdebug_debug_init_if_requested_at_startup (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8CBC0: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8D207: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x70C532: ??? (in /usr/local/bin/php)
==29315==    by 0x65EC9A: zend_call_function (in /usr/local/bin/php)
==29315==    by 0x571777: ??? (in /usr/local/bin/php)
==29315==    by 0x680961: zend_hash_apply (in /usr/local/bin/php)
==29315==    by 0x577165: php_call_shutdown_functions (in /usr/local/bin/php)
==29315==    by 0x601B14: php_request_shutdown (in /usr/local/bin/php)
==29315== 
==29315== Invalid read of size 4
==29315==    at 0x683652: zend_hash_str_find (in /usr/local/bin/php)
==29315==    by 0x5A92466: xdebug_lib_find_in_globals (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3272: xdebug_should_ignore (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3474: xdebug_debug_init_if_requested_at_startup (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8CBC0: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8D207: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x70C532: ??? (in /usr/local/bin/php)
==29315==    by 0x65EC9A: zend_call_function (in /usr/local/bin/php)
==29315==    by 0x571777: ??? (in /usr/local/bin/php)
==29315==    by 0x680961: zend_hash_apply (in /usr/local/bin/php)
==29315==    by 0x577165: php_call_shutdown_functions (in /usr/local/bin/php)
==29315==    by 0x601B14: php_request_shutdown (in /usr/local/bin/php)
==29315==  Address 0x9bad2a23 is not stack'd, malloc'd or (recently) free'd
==29315== 
==29315== 
==29315== Process terminating with default action of signal 11 (SIGSEGV)
==29315==  Access not within mapped region at address 0x9BAD2A23
==29315==    at 0x683652: zend_hash_str_find (in /usr/local/bin/php)
==29315==    by 0x5A92466: xdebug_lib_find_in_globals (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3272: xdebug_should_ignore (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5AA3474: xdebug_debug_init_if_requested_at_startup (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8CBC0: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x5A8D207: ??? (in /usr/local/lib/php/extensions/no-debug-non-zts-20230831/xdebug.so)
==29315==    by 0x70C532: ??? (in /usr/local/bin/php)
==29315==    by 0x65EC9A: zend_call_function (in /usr/local/bin/php)
==29315==    by 0x571777: ??? (in /usr/local/bin/php)
==29315==    by 0x680961: zend_hash_apply (in /usr/local/bin/php)
==29315==    by 0x577165: php_call_shutdown_functions (in /usr/local/bin/php)
==29315==    by 0x601B14: php_request_shutdown (in /usr/local/bin/php)
==29315==  If you believe this happened as a result of a stack
==29315==  overflow in your program's main thread (unlikely but
==29315==  possible), you can try to increase the size of the
==29315==  main thread stack using the --main-stacksize= flag.
==29315==  The main thread stack size used in this run was 8388608.
==29315== 
==29315== HEAP SUMMARY:
==29315==     in use at exit: 3,302,609 bytes in 24,924 blocks
==29315==   total heap usage: 27,618 allocs, 2,694 frees, 4,148,865 bytes allocated
==29315== 
==29315== LEAK SUMMARY:
==29315==    definitely lost: 27,936 bytes in 873 blocks
==29315==    indirectly lost: 40 bytes in 1 blocks
==29315==      possibly lost: 2,210,586 bytes in 17,503 blocks
==29315==    still reachable: 1,064,047 bytes in 6,547 blocks
==29315==         suppressed: 0 bytes in 0 blocks
==29315== Rerun with --leak-check=full to see details of leaked memory
==29315== 
==29315== Use --track-origins=yes to see where uninitialised values come from
==29315== For lists of detected and suppressed errors, rerun with: -s
==29315== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)