Can I use the stack info in Exception?

[Dsby via digitalmars-d-ldc]

I use the ldc1.1-b5.
when I tach the Exception, in ldc, it not printf the stack info. 
in dmd ,it has.

import std.json;
import std.stdio;

string pjson(ref JSONValue js)
{
     return js["hhh"].str;
}

void main()
{
     JSONValue js;
     js["hh"] = 10;
     try{
         pjson(js);
     } catch(Exception e){
         writeln(e.toString());
     }
}

In ldc , only printf:
std.json.JSONException@/build/src/ldc/runtime/phobos/std/json.d(442): Key not found: hhh
----------------


In dmd , it printf:
std.json.JSONException at std/json.d(442): Key not found: hhh
----------------
??:? pure @safe void 
std.exception.bailOut!(std.json.JSONException).bailOut(immutable(char)[], ulong, const(char[])) [0x452c66]
??:? pure @safe inout(std.json.JSONValue)* 
std.exception.enforce!(std.json.JSONException, 
inout(std.json.JSONValue)*).enforce(inout(std.json.JSONValue)*, 
lazy const(char)[], immutable(char)[], ulong) [0x452cca]
??:? std.json.JSONValue.opIndexinout(pure ref 
inout(std.json.JSONValue) function(immutable(char)[])) [0x448072]
??:? immutable(char)[] exception.pjson(ref std.json.JSONValue) 
[0x442f0a]
??:? _Dmain [0x442f4f]
??:? 
_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv 
[0x445142]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate()) [0x44508c]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll() [0x4450fe]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate()) [0x44508c]
??:? _d_run_main [0x444ffd]
??:? main [0x443715]
??:? __libc_start_main [0x604f7290]



Does has any parameter  to enable cath the stack info?