[Bug python/16624] New: python pretty printers can turn into infinite loop when maximum recursion depth exceeded

[Bug python/16624] New: python pretty printers can turn into infinite loop when maximum recursion depth exceeded

[markus.mohrhard at googlemail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16624

            Bug ID: 16624
           Summary: python pretty printers can turn into infinite loop
                    when maximum recursion depth exceeded
           Product: gdb
           Version: 7.5
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
          Assignee: unassigned at sourceware dot org
          Reporter: markus.mohrhard at googlemail dot com

While debugging Libreoffice and trying to print mrModel in
TypeGroupConverter::createCategorySequence gdb starts to print out an infinite
number of Python Exceptions "maximum recursion deppth exceeded.

mrModel is of Type TypeGroupModel.

Attached is a backtrace of gdb while being in the loop. It seems I have already
5200 frames that all look similar.

I also checked our pretty printers and it seems that none is catching the
exception so I assume it must be in the gdb code itself.

System is OpenSuse 12.3 with gdb 7.5.1-2.1.1 and Libreoffice is a current
master --enable-dbgutil build.

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[Bug python/16624] python pretty printers can turn into infinite loop when maximum recursion depth exceeded

[pmuldoon at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16624

Phil Muldoon <pmuldoon at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING
                 CC|                            |pmuldoon at redhat dot com

--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
I don't see an attachment? Did you forget to attach one?

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[Bug python/16624] python pretty printers can turn into infinite loop when maximum recursion depth exceeded

[markus.mohrhard at googlemail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16624

--- Comment #2 from Markus Mohrhard <markus.mohrhard at googlemail dot com> ---
Created attachment 7436
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7436&action=edit
backtrace of gdb

Forgotten attachment.

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[Bug python/16624] python pretty printers can turn into infinite loop when maximum recursion depth exceeded

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=16624

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at sourceware dot org

--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Is this still a problem?

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