libphp.so dumps core in sapi_register_post_entry+0x31()

Description

Starting Apache with libphp imediately ends with core dump:

httpd:core> $C
    7fdd8f067660 libphp8.1.so`sapi_register_post_entry+0x31()
    7fdd8f067680 libphp8.1.so`sapi_register_post_entries+0x2a()
    7fdd8f067690 libphp8.1.so`php_setup_sapi_content_types+0x10()
    7fdd8f0676e0 libphp8.1.so`tsrm_update_active_threads+0xb0()
    7fdd8f067720 libphp8.1.so`ts_allocate_fast_id+0xe3()
    7fdd8f067760 libphp8.1.so`php_apache_server_startup+0x6c()
    7fdd8f0677b0 ap_run_post_config+0x54()
    7fdd8f0678f0 main+0x1873()
    7fdd8f067900 0x465fc4()

This worked well with PHP 8.1.0.

git bisessct gives following output:

72f8dbb31295e4e5633a9033c6d91a45d102c485 is the first bad commit
commit 72f8dbb31295e4e5633a9033c6d91a45d102c485
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Nov 24 20:43:30 2021 +0300

    Fixed bug #81634 (ZEND_ENABLE_STATIC_TSRMLS_CACHE produces extensionswith the STATIC_TLS flag)

 TSRM/TSRM.h              | 8 ++++++--
 Zend/zend.c              | 2 +-
 Zend/zend.h              | 4 ++++
 build/php.m4             | 2 +-
 win32/build/confutils.js | 2 +-
 5 files changed, 13 insertions(+), 5 deletions(-)

Apply reversely patch from above commit allows me to use PHP 8.1.5.

PHP Version

PHP 8.1.5

Operating System

Solaris

まず、Solaris での Apache/libphp の起動時クラッシュを再現し、最初に問題を引き起こしたコミット 72f8dbb31295e4e5633a9033c6d91a45d102c485 を確認します。その変更の周辺にある TSRM/TSRM.h、Zend/zend.c、Zend/zend.h、build/php.m4 を読みます。PHP 8.1.5 が libphp とともにコアダンプを発生させずに起動でき、適切なテストでリグレッションがカバーされれば完了です。