Subj : spider monkey core dump in js_EmitTree
To   : "'Brendan Eich'" <brendan@meer.net>,
From : Anindita.Mahapatra@comverse.com (Mahapatra Anindita)
Date : Wed Mar 19 2003 09:30 pm

I have a threadsafe, optimized Linux version of libjs.so
I'm executing a vxml script, the in-house vxml interpreter passes requests
to the script engine to evaluate expressions
In this particular case, while an expression is being evaluated, the
executable gives a segmentation fault & running gdb on the core file yields:

  #0  0x402c3447 in js_EmitTree ()
   from /vob/ThirdParty/ScriptEngine/SpiderMonkey/linux/lib/libjs.so 

The individual expressions that are being passed to spiderMonkey look like
the following
It is executed close to 193 times, each time e1_cnt/e2_cnt is incremented by
1, around the 194th time, it stops while evaluating & core dumps 
var __type = typeof(e1_cnt+1);
The expressions by themselves are evaluated ok, but somehow it seems that
after so many calls, it core dumps.
Is it possible that I could be running out of stack space ?
I'm using the default
#define JS_INIT_SIZE 1000000L
#define StackChunkSize 8192

Anybody has any suggestions/advise ?
Please let me know if there is any other information you require ?

---------------------- 
dialog.e1_cnt = 1;e1_cnt = 1;
e1_cnt
_event = undefined;
_message = undefined;
_event = 'event.e2';
_message = undefined;
_event == 'event.e1'
_event == 'event.e2'
e2_cnt
e2_cnt+1
var __type = typeof(e2_cnt+1);
__type

dialog.e2_cnt = 1;e2_cnt = 1;
e2_cnt
_event = undefined;
_message = undefined;
_event = 'event.e1';
e1_cnt
e1_cnt+1
var __type = typeof(e1_cnt+1);
__type
-------------
dialog.e1_cnt = 2;e1_cnt = 2;
e1_cnt
_event = undefined;
_message = undefined;
_event = 'event.e2';
_message = undefined;
_event == 'event.e1'
_event == 'event.e2'
e2_cnt
e2_cnt+1
var __type = typeof(e2_cnt+1);
__type

dialog.e2_cnt = 2;e2_cnt = 2;
e2_cnt
_event = undefined;
_message = undefined;
_event = 'event.e1';
e1_cnt
e1_cnt+1
var __type = typeof(e1_cnt+1);
__type
-----------
..... upto ~193

.