Re: recursion limit exceeded in Python API, but there's only one function in traceback

On 16/10/14 15:28, [email protected] wrote:
> On Oct 16, 2014, at 8:45 AM, Phil Muldoon <[email protected]> wrote:
>
>> On 16/10/14 11:45, Ömer Sinan Ağacan wrote:
>>> Hi all,
>>>
>>> I'm putting some breakpoints and then running some actions when
>>> program reaches that points, using Python API.
>>>
>>> After a few breaks, GDB is starting to print these lines:
>>>
>>> Traceback (most recent call last):
>>>  File "/home/omer/gdb_script/script.py", line 71, in handle_breakpoint
>>>    self.breakpoint_jump_addrs[bp.location].add(addr)
>>> RuntimeError: maximum recursion depth exceeded
>> That's an error from Python.  It tells me something in script.py is
>> not quite right.  Impossible to tell without seeing script.py in
>> general.  You can increase the recursion depth by doing something like
>>
>> import sys
>> sys.setrecursionlimit(9000)
>>
>> Where '9000' is a limit you can set and vary.  However, this might
>> indeed be papering over the cracks, and not fixing the fault.
> I would expect that you could wrap the script in a try/except block, to catch the stack overflow and print a Python stack trace when that happens.
>
> Should GDB print a Python backtrace when the Python script fails, just as executing a Python script standalone would do?

It prints an abbreviated backtrace by default.  "set python print-stack full" will enable the full backtrace (we had a request to do this for pretty printers).

Cheers

Phil