Obtained 20 stack frames.
/usr/games/crawl-0.22(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x6b32c3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-0.22(_Z20crash_signal_handleri+0x174) [0x6b3614]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7fe5e517b1e0]: 
/usr/games/crawl-0.22() [0x8b2bc0]
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7fe5e517b1e0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(waitpid+0x1c) [0x7fe5e54e3c4c]: 
/usr/games/crawl-0.22(_Z8call_gdbP8_IO_FILE+0x1c3) [0x6b3933]: call_gdb(_IO_FILE*)
/usr/games/crawl-0.22(_Z13do_crash_dumpv+0x3d9) [0x6ba9e9]: do_crash_dump()
/usr/games/crawl-0.22(_Z20crash_signal_handleri+0x74) [0x6b3514]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7fe5e517b1e0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fe5e54e3f6b]: 
/usr/games/crawl-0.22() [0x6ba144]
/usr/games/crawl-0.22() [0x6ba60f]
/usr/games/crawl-0.22(_Z15set_ident_flagsR8item_defj+0x2e2) [0x84ede2]: set_ident_flags(item_def&, unsigned int)
/usr/games/crawl-0.22(_Z18identify_inventoryv+0x47) [0x82d9b7]: identify_inventory()
/usr/games/crawl-0.22(_Z10setup_gameRK11newgame_def+0x313) [0xa25193]: setup_game(newgame_def const&)
/usr/games/crawl-0.22(_Z12startup_stepv+0x936) [0xb1f166]: startup_step()
/usr/games/crawl-0.22(main+0x109) [0x61aea9]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fe5e5167ead]: 
/usr/games/crawl-0.22() [0x61bf0d]