pixz backtrace

gistfile1.txt

> gdb pixz core                  
GNU gdb (Gentoo 7.3.1 p2) 7.3.1
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Reading symbols from /mnt/sda1/pixz/pixz...done.
[New LWP 2151]
[New LWP 2160]
[New LWP 2150]

warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Core was generated by `./pixz -7'.
Program terminated with signal 6, Aborted.
#0  0x00007f0b83b6daf5 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f0b83b6daf5 in raise () from /lib64/libc.so.6
#1  0x00007f0b83b6edf5 in abort () from /lib64/libc.so.6
#2  0x00007f0b83b66b4e in __assert_fail_base () from /lib64/libc.so.6
#3  0x00007f0b83b66c10 in __assert_fail () from /lib64/libc.so.6
#4  0x0000000000402dc2 in die (fmt=0x407fb0 "Error encoding block")
    at common.c:21
#5  0x000000000040683e in encode_thread (thnum=0) at write.c:305
#6  0x000000000040420c in pipeline_thread_process (arg=0x0) at common.c:508
#7  0x00007f0b84351d96 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f0b83c2357d in clone () from /lib64/libc.so.6