[Libguestfs] [Bug 1406906] [PATCH 0/3] Fix segmentation fault in Python bindings

[Matteo Cafasso]

This series addresses the issue where non UTF8 file names in a guest image lead to libguestfs segfault with Python 3 APIs.

The core issue is the APIs are not checking the return value when constructing a new PyObject. Therefore NULL pointers are added to Python collections (lists and dictionaries) crashing the application.

Few notes regarding the comments on the previous patch.

- Added a regression test file
- Removed the Exception string setter functions as Python APIs already set them in case of error
  https://docs.python.org/3.6/c-api/exceptions.html#exception-handling (third paragraph)
- Fixed functions in python/handle.c
- Correctly clear and decrement the refcount of the list/dictionary object before returning on error

Matteo Cafasso (3):
  generator: check return value of Python object functions
  python: check return value of object functions in handle.c
  python: add regression test for RHBZ#1406906

 generator/python.ml            | 119 +++++++++++++++++++++++++----------------
 python/handle.c                |  48 +++++++++++++----
 python/t/test830RHBZ1406906.py |  55 +++++++++++++++++++
 3 files changed, 165 insertions(+), 57 deletions(-)
 create mode 100644 python/t/test830RHBZ1406906.py

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2.11.0