Symbol lookup error: /opt/alt/php*/usr/lib64/php/modules/apcu.so: undefined symbol: pcre_exec

Issue

There are the errors regarding apcu in logs:

[Thu Jan 26 13:08:18 2023] [error] /opt/alt/php*/usr/bin/php-cgi: symbol lookup error

It is not possible to replicate them on demand - but the errors are being generated several times a day.

Environment

• Alt-PHP

Solution

Please update the "pecl-ext" packages for all affected PHP versions (from 5.3 to 7.2):

yum update alt-php*-pecl-ext

Cause

The error was linked to a reported bug present on older releases (ID ALTPHP-1398). The patched versions are the following:

alt-php53-pecl-ext-1-148
alt-php54-pecl-ext-1-142
alt-php55-pecl-ext-1-129
alt-php56-pecl-ext-1-102
alt-php70-pecl-ext-1-90
alt-php71-pecl-ext-1-79
alt-php72-pecl-ext-1-83

Useful links

Changelog.