$ egdb bitcoind bitcoind.core                                                            
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Reading symbols from bitcoind...
[New process 613405]
Core was generated by `bitcoind'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  libunwind::LocalAddressSpace::get32 (this=<optimized out>, addr=<optimized out>) at /usr/src/gnu/lib/libcxxabi/../../../gnu/llvm/libunwind/src/AddressSpace.hpp:221
221     /usr/src/gnu/lib/libcxxabi/../../../gnu/llvm/libunwind/src/AddressSpace.hpp: No such file or directory.
(gdb) bt       
#0  libunwind::LocalAddressSpace::get32 (this=<optimized out>, addr=<optimized out>) at /usr/src/gnu/lib/libcxxabi/../../../gnu/llvm/libunwind/src/AddressSpace.hpp:221
Abort trap (core dumped)