Using mempool in privoxy found error like below

[qianguozheng]

I define #define NCX_PTR_SIZE 8 and try 4 also, still have below errors.
I don't understand why it can happen?

n=[0], ncx_pagesize_shift=[0], ncx_pagesize=[4096]
n=[0], ncx_pagesize_shift=[12], ncx_pagesize=[4096]
ncx_slab_max_size=[2048], ncx_slab_exact_size=[64], ncx_slab_exact_shift=[0]
ncx_slab_max_size=[2048], ncx_slab_exact_size=[64], ncx_slab_exact_shift=[6]
pool->min_size=[8], pool->min_shift=[3]
2016-05-11 18:32:24.500 7f9abf43c700 Info: Privoxy version 3.0.24
2016-05-11 18:32:24.500 7f9abf43c700 Info: Program name: ./privoxy
[D] [ncx_slab_alloc_locked:383] slab alloc: 0x7f9a7ebbf000
The soft limit for CORE after is 18446744073709551615
The hard limit for CORE after is 18446744073709551615 18446744073709551615
The soft limit for NOFILE after is 1024
The hard limit for NOFILE after is 65536 18446744073709551615
The soft limit for RLIMIT_NOFILE after is 65536
The hard limit for RLIMIT_NOFILE after is 65536 18446744073709551615
[D] [ncx_slab_free_locked:408] slab free: 0x1b62ec0
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b62ec0
[D] [ncx_slab_free_locked:408] slab free: 0x1b62f40
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b62f40
[D] [ncx_slab_free_locked:408] slab free: 0x1b62fa0
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b62fa0
[D] [ncx_slab_free_locked:408] slab free: 0x1b601b0
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b601b0
[D] [ncx_slab_free_locked:408] slab free: 0x1b601f0
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b601f0
[D] [ncx_slab_free_locked:408] slab free: 0x1b60210
[E] [ncx_slab_free_locked:411] ncx_slab_free(): outside of pool, start=0x7f9a7ebbf000, end=0x7f9abe5c7010, p=0x1b60210