[Bug 1241668] [NEW] gdb embeds python3.3, but support scripts are not compatible

[Russell Power]

Public bug reported:

The saucy gdb appears to be linked against libpython3.3.

This results in a conflict when trying to debug python2.7 programs,
which use the python2.7-dbg.py scripts from python2.7-dbg.  This makes
debugging Python programs difficult.


  File "/usr/lib/debug/usr/bin/python2.7-gdb.py", line 54
    Py_TPFLAGS_HEAPTYPE = (1L << 9)
                            ^
SyntaxError: invalid syntax
  File "/usr/lib/debug/usr/bin/python2.7-gdb.py", line 54
    Py_TPFLAGS_HEAPTYPE = (1L << 9)

There are also invalid print statements that show up as well.

If these are updated, then the file parses, but `py-bt` fails with:

Error occurred in Python command: global name 'long' is not defined

Updating all of the long() references to int() doesn't work:

Error occurred in Python command: 'gdb.Value' object cannot be
interpreted as an integer

** Affects: gdb (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1241668

Title:
  gdb embeds python3.3, but support scripts are not compatible

Status in “gdb” package in Ubuntu:
  New

Bug description:
  The saucy gdb appears to be linked against libpython3.3.

  This results in a conflict when trying to debug python2.7 programs,
  which use the python2.7-dbg.py scripts from python2.7-dbg.  This makes
  debugging Python programs difficult.

  
    File "/usr/lib/debug/usr/bin/python2.7-gdb.py", line 54
      Py_TPFLAGS_HEAPTYPE = (1L << 9)
                              ^
  SyntaxError: invalid syntax
    File "/usr/lib/debug/usr/bin/python2.7-gdb.py", line 54
      Py_TPFLAGS_HEAPTYPE = (1L << 9)

  There are also invalid print statements that show up as well.

  If these are updated, then the file parses, but `py-bt` fails with:

  Error occurred in Python command: global name 'long' is not defined

  Updating all of the long() references to int() doesn't work:

  Error occurred in Python command: 'gdb.Value' object cannot be
  interpreted as an integer

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