lev: MessagePack test segmentation fault

gistfile1.txt

? lev.mpack:    custom data: 130/130 within 105.822 ms
? lev.mpack:    pack,unpack: integer negative fixnum: 64/64 within 0.129 ms                                                                                                                               

Program received signal SIGSEGV, Segmentation fault.                                                                                                                                                      
0x0000000000419f06 in lev_slab_decRef (block=0xe82760) at src/lev_slab.c:119
119       return block->refcount;                                                                                                                                                                         
(gdb) bt
#0  0x0000000000419f06 in lev_slab_decRef (block=0xe82760) at src/lev_slab.c:119
#1  0x0000000000418a84 in buffer__gc (L=0x40000378) at src/lev_new_buffer.c:797
#2  0x00000000004796a6 in lj_BC_FUNCC ()
#3  0x000000000047c379 in gc_call_finalizer ()
#4  0x000000000047c476 in gc_finalize ()
#5  0x000000000047c725 in gc_onestep ()
#6  0x000000000047cbb8 in lj_gc_step ()
#7  0x000000000047b019 in lj_fff_gcstep ()
#8  0x0000000000466ae0 in lua_pcall ()
#9  0x00000000004118b3 in docall (L=0x40000378, narg=1, clear=0) at src/lev_main.c:176
#10 0x000000000041220e in handle_script (L=0x40000378, argv=0x931010, n=1) at src/lev_main.c:343
#11 0x00000000004137cd in pmain (L=0x40000378) at src/lev_main.c:825
#12 0x00000000004796a6 in lj_BC_FUNCC ()
#13 0x0000000000466382 in lua_cpcall ()
#14 0x0000000000413869 in main (argc=3, argv=0x931010) at src/lev_main.c:867