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#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [x] PR should be backported to stable branches - [x] Tested changes locally - [x] Related to issue #3350
#### Description <!-- Describe your changes in detail --> This PR fixes a crash when `dns_cache_init=off`.
The issue is described in #3350 and the crash is caused when trying to search in `dns_cache.c` [LOCK_DNS_HASH();](https://github.com/kamailio/kamailio/blob/d4629be286fc6d3cf61574e34ee877b2c5...).
When `dns_cache_init=off`, the lock is never initialized and when trying to lock it crashes.
Per my understanding, when `dns_cache_init=off`, no calls to `dns_cache.c` should be made and instead call the alternative ones from `resolve.c`, since the whole functions are compiled only when USE_DNS_CACHE definition is present.
Just a question to clarify, what is the reasoning behind USE_DNS_CACHE definition and a separate `dns_cache_init` parameter? You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3858
-- Commit Summary --
* core/resolve: Check dns_cache_init and choose appropriate functions
-- File Changes --
M src/core/resolve.c (16)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3858.patch https://github.com/kamailio/kamailio/pull/3858.diff