On Thu, Aug 4, 2016 at 12:01 PM, Abhishek Singh
<singhabhishek....@gmail.com> wrote:
> Appreciate your help so far.
>
> Sample user JS code[0] looks like this now:
>
> {code}
> function OnUpdate(doc, meta) {
>   log("doc meta id: ", meta.key);
>
>   if (meta.type === "json" && doc.ssn) {
>   ..
>   ..
>    }
> }
>
> Debug = debug.Debug;
> log(Debug.showBreakPoints(OnUpdate));
>
> Function OnDelete() {}
> // more functions
> {code}
>
> ===
>
>
> * Fired command:
>
> {"command": "setbreakpoint", "type": "request", "arguments": {"type": 
> "function", "target": "OnUpdate"}, "seq": 862}
>
> * show.BreakPoints(“OnUpdate”) dumps the function definition:
>
> "(doc, meta) {\n  log(\"doc meta id: \", meta.key);\n\n  if (meta.type === 
> \"json\" ) {\n    log(\"doc.ssn field: \", doc.ssn);\n\n    updated_doc = 
> CalculateCreditScore(doc)\n    credit_bucket[meta.key] = updated_doc;\n\n    
> var value = credit_bucket[meta.key];\n\n    //delete 
> credit_bucket[meta.key];\n\n    var d = new Date();\n    var n = 
> ISODateString(d);\n    log(\"ISO 8601: \", n);\n\n    
> registerCallback(\"CallbackFunc1\", meta.key, n);\n    
> order_queue[meta.key];\n  }\n}"
>
> I guess it confirms that breakpoint has been set using C++ apis

The breakpoint should show up as a statement prefixed with [B0].  I
don't see it so it looks like setting it failed somehow.

> ===
>
> One new problem that I see now, when I’ve :
>
> {code}
> Debug = debug.Debug;
> log(Debug.showBreakPoints(OnUpdate));
> {code}
>
> as part of user JS code, I see a crash from V8 when “Call” to “OnUpdate”[1] 
> is made . All I get from V8 about that crash was:
>
> fatal error: unexpected signal during runtime execution
> [signal 0xb code=0x1 addr=0x0 pc=0x4dc05f1]
>
> Could I get a bit more verbose error message, which I could make sense of? :)

Looks like a nullptr dereference.  Try it with a debug build (`make
x64.debug`), it has many extra checks enabled.

> BTW Ben, do you hang around on any IRC room? Understand you’re much busy, but 
> I suppose I can fix things much sooner on my end using your help via IRC 
> communication than email :) Else I could continue using this thread.

Only sporadically, usually only when I feel like procrastinating. :-)

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