.I build Zabbix from source. For version 6.2.7 I could not build due to failures in:

misc.c and parse.c in eval_get_last_function_token.

Has to do with declarations inside the for loops on line 260 (misc.c) and line 389 (parse.c).

I'm able to change my environment and build with the gnu99 standard, but was this expected? If expected can we get a documentation update in the Zabbix manual when doing installation from sources?

I have not tried building on EL7 or EL9 yet as we support all 3 Linux versions.