okay...thanks for the info !

I'll definitely let you know when I find out the bug.

On Thu, Oct 29, 2015 at 12:09 PM, Brad Chamberlain <[email protected]> wrote:

>
> Hi Hui --
>
> Chiming in on this part:
>
> On Thu, 29 Oct 2015, Michael Ferguson wrote:
>
> The compiler generally uses a global variable for the file/line.
>> This variable is set with SET_LINENO and the file/line from it are
>> stored in each new AST node.
>>
>> If you have identified the AST node with the wrong line number, you
>> can get its id number (ast->id) and instruct the compiler to
>> call gdbShouldBreakHere when that id is created with --break-on-id.
>> It's possible that some code adding AST elements called
>> SET_LINENO with the wrong argument.
>>
>
>
> If you find the source of the AST creation that has the wrong
> filename/line#, please let us know.  We're trying to shake out these cases
> over time as best we can, for obvious reasons.
>
>
> One other thing I'll mention is that oftentimes, an AST node that you're
> looking at in codegen has been copied a few times before getting there, so
> its creation point will be a copy of another AST node which also had the
> wrong filename/line#.  So then I usually re-run with --break-on-id, chasing
> the copies upstream until I find the original creation point.
>
> -Brad
>
>


-- 
Best regards


Hui Zhang
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