/in/foo.c:4:8: error: variably modified 'time_early' at file scope
 double time_early[N], time_late[N], dis[N];
        ^~~~~~~~~~
/in/foo.c:4:23: error: variably modified 'time_late' at file scope
 double time_early[N], time_late[N], dis[N];
                       ^~~~~~~~~
/in/foo.c:4:37: error: variably modified 'dis' at file scope
 double time_early[N], time_late[N], dis[N];
                                     ^~~
/in/foo.c:6:1: error: unknown type name 'bool'
 bool func(double v)
 ^~~~
/in/foo.c: In function 'func':
/in/foo.c:12:11: error: 'false' undeclared (first use in this function)
    return false;
           ^~~~~
/in/foo.c:12:11: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:18:9: error: 'true' undeclared (first use in this function)
  return true;
         ^~~~
/in/foo.c:19:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^