Tested values 1. 31 - crash; 2. 32 - crash; 3. 33 - crash; 4. 34 - crash; 5. 35 - crash; 6. 36 - no crash; 7. 37 - no crash; 8. 38 - no crash; 9. 39 - no crash; 10. 40 - no crash; 11. 300 - no crash.
Then I add at end of the config file ``` $var(tmp) = $hdr(X-hdr17); ``` and make test again 1. 36 - crash; 2. 37 - no crash.
Then I add at end of the config file ``` $var(tmp) = $hdr(X-hdr18); ``` and make test again 1. 37 - crash; 2. 38 - no crash.
Then I add at end of the config file ``` $var(tmp) = $hdr(X-hdr19); ``` and make test again 1. 38 - crash; 2. 39 - no crash.
Then I add at end of the config file ``` $var(tmp) = $hdr(X-hdr20); ``` and make test again 1. 39 - crash; 2. 40 - no crash.
Probable if I add 300 strings like `$var(tmp) = $hdr(X-hdr20);` then issue will be reproduced with `pv_buffer_slots = 300`,