Victor Stinner blog 3

My contributions to CPython during 2017 Q3 (july, august, september), Part 2: "Dangling threads".

Previous report: My contributions to CPython during 2017 Q3: Part 1.

Next reports:

• My contributions to CPython during 2017 Q3: Part 3 (funny bugs).

Summary:

• Bugfixes: Reference cycles
• socketserver leaking threads and processes
  • test_logging random bug …

My contributions to CPython during 2017 Q3 (july, august, september), Part 1.

Previous report: My contributions to CPython during 2017 Q2 (part1).

Next reports:

• My contributions to CPython during 2017 Q3: Part 2 (dangling threads).
• My contributions to CPython during 2017 Q3: Part 3 (funny bugs).

Summary:

• Statistics
• Security fixes …

I am working on the Python security for years, but I never wrote anything about that. Let's fix this!

I am currently at a CPython sprint 2017 at Facebook. We are discussing my idea of writing a new C API for CPython hiding implementation details and replacing macros with function calls.

This article tries to explain why the CPython C API needs to evolve.

This is the third part of my contributions to CPython during 2017 Q2 (april, may, june):

• Security
• Trick bug: Clang 4.0, dtoa and strict aliasing
• sigwaitinfo() race condition in test_eintr
• FreeBSD test_subprocess core dump

Previous reports:

• My contributions to CPython during 2017 Q2 (part 1).
• My contributions to CPython …

This is the second part of my contributions to CPython during 2017 Q2 (april, may, june):

• Mentoring
• Reference and memory leaks
• Contributions
• Enhancements
• Bugfixes
• Stars of the CPython GitHub project

Previous report: My contributions to CPython during 2017 Q2 (part 1).

Next report: My contributions to CPython during 2017 Q2 …

This is the first part of my contributions to CPython during 2017 Q2 (april, may, june):

• Statistics
• Buidbots and test.bisect
• Python 3.6.0 regression
• struct.Struct.format type
• Optimization: one less syscall per open() call
• make regen-all

Previous report: My contributions to CPython during 2017 Q1.

Next reports …

I spent the last 6 months on working on buildbots: reduce the failure rate, send email notitication on failure, fix random bugs, detect more bugs using warnings, backport fixes to older branches, etc. I decided to fix all buildbots issues: fix all warnings and all unstable tests!

The good news …

This article tells the story of the new CPython test.bisect tool to identify failing tests in the CPython test suite.

My contributions to CPython during 2017 Q1 (january, februrary, march):

• Statistics
• Optimization
• Tricky bug
• FASTCALL optimizations
• Stack consumption
• Contributions
• os.urandom() and getrandom()
• Migration to GitHub
• Enhancements
• Security
• regrtest
• Bugfixes

Previous report: My contributions to CPython during 2016 Q4. Next report: My contributions to CPython during 2017 Q2 (part 1 …