1SET STATEMENT debug_dbug='+d,pcre_exec_error_123' for
2SELECT 'a' RLIKE 'a';
3'a' RLIKE 'a'
40
5Warnings:
6Warning	1139	Regex error 'pcre_exec: Internal error (-123)'
7SELECT 'a' RLIKE 'a';
8'a' RLIKE 'a'
91
10