Reading symbols from ./a.out...done.
[New LWP 10789]
[New LWP 10790]
[New LWP 10788]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./a.out'.
Program terminated with signal SIGILL, Illegal instruction.
#0  ego () at main.cpp:66
66                  __builtin_trap();
[Current thread is 1 (Thread 0x7febc788c700 (LWP 10789))]
(gdb) list
61      void* ego(void*) {
62          auto id = getpwnam("sfortas");
63          auto state = life_state{};
64          while(1) {
65              if(not handle_life_events(id, state))
66                  __builtin_trap();
67          }
68          return nullptr;
69      }
70
(gdb) print *id
$1 = {pw_name = 0x7febc0000b20 "sfortas", pw_passwd = 0x7febc0000b28 "x",
  pw_uid = 1000, pw_gid = 1000, 
  pw_gecos = 0x7febc0000b34 "sebastien,/u/drbigtime,",
  pw_dir = 0x7febc0000b41 "/home/sfortas",
  pw_shell = 0x7febc0000b4f "/bin/zsh"}
(gdb) print state
$2 = {marriages = 1, children = 1, years = 40,
  locale = 0x400a39 "America/New_York"}
(gdb) info threads
  Id   Target Id         Frame
* 1    Thread 0x7febc788c700 (LWP 10789) ego () at main.cpp:66
  2    Thread 0x7febc708b700 (LWP 10790) 0x00007febc7990e57 in sched_yield
    () at ../sysdeps/unix/syscall-template.S:78
  3    Thread 0x7febc8bd4740 (LWP 10788) 0x00007febc7c86d2d in 
       __GI___pthread_timedjoin_ex (threadid=140650490668800,
       thread_return=0x7ffc97658a00, abstime=0x0, 
       block=<optimized out>) at pthread_join_common.c:89
(gdb) thread 3
[Switching to thread 3 (Thread 0x7febc708b700 (LWP 10790))]
#0  0x00007febc7990e57 in sched_yield ()
    at ../sysdeps/unix/syscall-template.S:78
78      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) where
#0  0x00007febc7990e57 in sched_yield ()
    at ../sysdeps/unix/syscall-template.S:78
#1  0x000000000040076c in work () at main.cpp:37
#2  0x00007febc7c856db in start_thread (arg=0x7febc708b700)
    at pthread_create.c:463
#3  0x00007febc79ae88f in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) up
#1  0x000000000040076c in work () at main.cpp:37
37              sched_yield();
(gdb) list
32      void* work(void*) {
33          constexpr char const* stuff[] = {
34              "https://github.com/doctorbigtime",
35          };
36          while(1) {
37              sched_yield();
38              wait_condition(&time_available_condition, &mtx);
39              for(auto i = 0u; i < sizeof(stuff)/sizeof(*stuff); ++i) {
40                  work_on(stuff[i]);
41              }
(gdb) quit