Obtained 24 stack frames.
/usr/games/crawl-git-a7dcef737d(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x6aaa63]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-a7dcef737d(_Z20crash_signal_handleri+0x174) [0x6aadb4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7ff4679131e0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7ff467c7bf6b]: 
/usr/games/crawl-git-a7dcef737d() [0x6b18a4]
/usr/games/crawl-git-a7dcef737d() [0x6b1d6f]
/usr/games/crawl-git-a7dcef737d(_Z20crash_signal_handleri+0x283) [0x6aaec3]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x321e0) [0x7ff4679131e0]: 
/usr/games/crawl-git-a7dcef737d(_Z9hash_randijj+0x28) [0x7cd588]: hash_rand(int, unsigned int, unsigned int)
/usr/games/crawl-git-a7dcef737d(_ZN12mcache_ghostC1ERK12monster_info+0xe2) [0xbf58e2]: mcache_ghost::mcache_ghost(monster_info const&)
/usr/games/crawl-git-a7dcef737d(_ZN14mcache_manager16register_monsterERK12monster_info+0x98) [0xbf63b8]: mcache_manager::register_monster(monster_info const&)
/usr/games/crawl-git-a7dcef737d(_Z18tile_draw_map_cellRK9coord_defb+0x1cd) [0xbecc5d]: tile_draw_map_cell(coord_def const&, bool)
/usr/games/crawl-git-a7dcef737d(_Z14show_update_atRK9coord_def13enum_bitfieldI10layer_typeLi5EE+0x29d) [0xaa38bd]: show_update_at(coord_def const&, enum_bitfield<layer_type, 5>)
/usr/games/crawl-git-a7dcef737d(_Z14view_update_atRK9coord_def+0x2e) [0xb9ba6e]: view_update_at(coord_def const&)
/usr/games/crawl-git-a7dcef737d(_ZNK7monster12check_redrawERK9coord_defb+0x100) [0x9f7ff0]: monster::check_redraw(coord_def const&, bool) const
/usr/games/crawl-git-a7dcef737d() [0x579308]
/usr/games/crawl-git-a7dcef737d() [0x57b4c8]
/usr/games/crawl-git-a7dcef737d(_Z19handle_monster_moveP7monster+0xb1b) [0x93239b]: handle_monster_move(monster*)
/usr/games/crawl-git-a7dcef737d(_Z15handle_monstersb+0x7f5) [0x934735]: handle_monsters(bool)
/usr/games/crawl-git-a7dcef737d(_Z12world_reactsv+0xb2) [0xc0bd92]: world_reacts()
/usr/games/crawl-git-a7dcef737d() [0xc12566]
/usr/games/crawl-git-a7dcef737d(main+0x63d) [0x6125bd]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7ff4678ffead]: 
/usr/games/crawl-git-a7dcef737d() [0x6130dd]