> And "p history_offset"? Should be 0. Nope - it is 2:
Program received signal SIGSEGV, Segmentation fault. 0x00007ffff79b6a0b in previous_history () at /build/readline6-RKA9OI/readline6-6.3/history.c:185 185 /build/readline6-RKA9OI/readline6-6.3/history.c: No such file or directory. (gdb) p history_offset $1 = 2 (gdb) p *(the_history[2]) Cannot access memory at address 0x10 We are up to something! :-) -c PS: I did: Invoke birdc, „show proto\n“, either ^P or ↑ → 💣