Misbehaving recursive functions

I realize that recursive functions are likely to be subject to some limitations, but it appears that the generated code is invalid. Here is a simple example to illustrate the problem.

using Toybox.Application as App;
using Toybox.System as Sys;

function recursive_function(lo, hi) {
Sys.println(Lang.format("lo=$1$ hi=$2$", [ lo, hi ]));

if (lo == hi) {
Sys.println("end recurse!");
return;
}

++lo;
recursive_function(lo, hi);
}

class ZebraApp extends App.AppBase {

function onStart() {
recursive_function(0, 3);
}

function onStop() {
}

function getInitialView() {
return [ new ZebraView() ];
}
}


When I run the program, I see the following output...

Shell Version 0.1.0
lo=0 hi=3
lo=1 hi=3
lo=2 hi=3
lo=3 hi=3
end recurse!
lo=4 hi=3
lo=5 hi=3
lo=6 hi=3
lo=7 hi=3
lo=8 hi=3
lo=9 hi=3
lo=10 hi=3
lo=11 hi=3
lo=12 hi=3
lo=13 hi=3
lo=14 hi=3
lo=15 hi=3
lo=16 hi=3
lo=17 hi=3
lo=18 hi=3
Stack Overflow Error
in recursive_function (source\ZebraApp.mc:5)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in recursive_function (source\ZebraApp.mc:13)
in onStart (source\ZebraApp.mc:19)
Stack Overflow Error
Complete
Connection Finished
Closing shell and port

As you can see, the recursion was supposed to end, but it just keeps on going. I've found that if I update the code to terminate the recursion a little differently, the problem can be avoided.

using Toybox.Application as App;
using Toybox.System as Sys;

function recursive_function(lo, hi) {
Sys.println(Lang.format("lo=$1$ hi=$2$", [ lo, hi ]));

if (lo == hi) {
Sys.println("end recurse!");
return;
}
else {
++lo;
recursive_function(lo, hi);
}
}