Printing nested structures crashes the board

[kiranshila]

In the cljs repl

cljs.user=> {:a 1 :b {:c 1 :d 3}}

Then on the serial connection

>Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC      : 0x40083caf  PS      : 0x00060230  A0      : 0x8008503c  A1      : 0x3ffdf0f0
A2      : 0x3ffb7838  A3      : 0x3ffdf0f0  A4      : 0x3ffc1150  A5      : 0x3ffdf0e0
A6      : 0xb33fffff  A7      : 0x000000f0  A8      : 0x80083cad  A9      : 0x3ffdf0d0
A10     : 0x00000000  A11     : 0x3ffb7838  A12     : 0x00060420  A13     : 0x00000001
A14     : 0xb33fffff  A15     : 0x00060023  SAR     : 0x00000019  EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000001c  LBEG    : 0x4009b234  LEND    : 0x4009b262  LCOUNT  : 0xffffffff

Backtrace: 0x40083caf:0x3ffdf0f0 0x40085039:0x3ffdf110 0x4000bec7:0x3ffdf130 0x401a6bab:0x3ffdf150 0x401a0520:0x3ffdf180

Rebooting...

[mfikes]

Yes, I this occurs on 0.6.0 as well, so not a regression with 0.7.0.

On 0.6.0, I saw:

>***ERROR*** A stack overflow in task espruinoTask has been detected.
abort() was called at PC 0x40096ce4 on core 0

Backtrace: 0x40096b73:0x3ffd8140 0x40096ccb:0x3ffd8160 0x40096ce4:0x3ffd8180 0x40093dad:0x3ffd81a0 0x400952f0:0x3ffd81d0 0x400952a6:0x3ffd81f0

Rebooting...

[kiranshila]

here is the compiled js

(function() {
    try {
        return cljs.core.pr_str.call(null, (function() {
            var ret__6698__auto__ = new cljs.core.PersistentArrayMap(null, 2, [new cljs.core.Keyword(null, "a", "a", -2123407586), (1), new cljs.core.Keyword(null, "b", "b", 1482224470), new cljs.core.PersistentArrayMap(null, 2, [new cljs.core.Keyword(null, "c", "c", -1763192079), (1), new cljs.core.Keyword(null, "d", "d", 1972142424), (3)], null)], null);
            (cljs.core._STAR_3 = cljs.core._STAR_2);

            (cljs.core._STAR_2 = cljs.core._STAR_1);

            (cljs.core._STAR_1 = ret__6698__auto__);

            return ret__6698__auto__;
        })());
    } catch (e1097) {
        var e__6699__auto__ = e1097;
        (cljs.core._STAR_e = e__6699__auto__);

        throw e__6699__auto__;
    }
})()

[kiranshila]

Seemingly both this issue and #28 are embedded specific as they work fine on the linux build. Additionally, the above js runs just fine when pasted in. Implying something is wrong with the REPL.