Hi Olivier, o.rojon@posteo.net skribis: > I followed the steps you mentioned, the results you find here: > https://www.mediafire.com/file/g5yz8f3pput8f3w/gdb-output/file . The > only part I omitted from the gdb output is the first lines mentioned > the license. (Will look at IPFS, maybe next time :)) Since it’s a small file, you can send it as an attachment. GDB shows: --8<---------------cut here---------------start------------->8--- Core was generated by `/gnu/store/0m0vd873jp61lcm4xa3ljdgx381qa782-guile-3.0.2/bin/guile --no-auto-com'. Program terminated with signal SIGBUS, Bus error. #0 0x00007f90885ccc78 in ?? () [Current thread is 1 (LWP 845)] (gdb) thread apply all bt Thread 9 (LWP 853): #0 0x00007f90884d90a4 in ?? () #1 0x0000000000000001 in ?? () #2 0x0000000000000001 in ?? () #3 0x00007f90840c9a30 in ?? () #4 0x00007f90840c95a0 in ?? () #5 0x00007f90840ca700 in ?? () #6 0x00007f90885ac067 in ?? () #7 0x00007f90845efa80 in ?? () #8 0x00007f90884fed94 in ?? () #9 0x0000000000000001 in ?? () #10 0x00007f90840c95a0 in ?? () --8<---------------cut here---------------end--------------->8--- That means debugging info is lacking. To address that, could you run: guix build $(guix gc --derivers /gnu/store/0m0vd873jp61lcm4xa3ljdgx381qa782-guile-3.0.2) and then: echo 'set debug-file-directory /gnu/store/9lg4gssswn2cwn54p6jjy6nld16ah795-guile-3.0.2-debug/lib/debug' >> ~/.gdbinit At that point, you can try again to run: gdb --core=./core That will hopefully show more useful info. Thanks in advance! Ludo’.