race in mod_unique_id.c?

[Min Xu]

Hi There,

I am running apache 2.0.48 and I noticed sometimes multiple threads 
could access the counter "cur_unique_id.counter" without proper 
synchronization.

In more details, an automatic tool I developed found after one thread 
write the counter at line 389:

cur_unique_id.counter = htons(counter);

another thread could read the same counter at line 347:

new_unique_id.counter = cur_unique_id.counter;

And in between of these two accesses no synchronizations are observed.

Could this be a bug, or it is an correct behavior?

Thanks for any inputs!

-Min