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David Malcolm
Email: dmalcolm@redhat.com
My Fedora People page: http://dmalcolm.fedorapeople.org/
I'm currently working on GCC upstream. Previously I worked on the Python runtimes within Fedora and Red Hat Enterprise Linux.
I'm interested in static code analysis
My old blog: http://dmalcolm.livejournal.com/
A very old, out-of-date Red Hat People Page: http://people.redhat.com/dmalcolm
GCC work
- GCC 15:
- Presentation (Cauldron 2024): What's new with diagnostics in GCC 15
- GCC 14:
- Blog post: Improvements to static analysis in the GCC 14 compiler
- Presentation (Cauldron 2023): Updates to diagnostics in GCC 14
- GCC 13:
- Blog post: Improvements to static analysis in the GCC 13 compiler
- Presentation (Cauldron 2022): What’s new in GCC -fanalyzer ?
- GCC 12:
- Blog post: The state of static analysis in the GCC 12 compiler
- Blog post: Prevent Trojan Source attacks with GCC 12
- Presentation (LPC 2021): Adding kernel-specific test coverage to GCC's -fanalyzer option
- GCC 11:
- Blog post: Static analysis updates in GCC 11
- Presentation (LPC 2020): GCC’s -fanalyzer option
- GCC 10:
- Implemented experimental new static analysis pass
- Blog post: Static analysis in GCC 10
- GCC 9:
- Blog post: Usability improvements in GCC 9
- Presentation (Cauldron 2018): Optimization records
- GCC 8:
- Blog post: Usability improvements in GCC 8
- Presentation (Cauldron 2017): Diagnostic and location-tracking improvements for GCC 8
- GCC 7:
- Unit testing and RTL "frontend"
- Blog post: Testing... Testing… GCC
- Presentation (Cauldron 2016): Testing BoF
- Unit testing and RTL "frontend"
- GCC 6:
- -Wmisleading-indentation vs “goto fail;”
- implemented underlined ranges of source, rather than just points
- GCC 5 improvements:
- RTL typesafety
- Blog post: Improving GCC’s internals
- Presentation (Cauldron 2014): A proposal for typesafe RTL
- libgccjit
- Blog post: JIT-compilation using GCC 5
- Presentation (Cauldron 2014): Just-In-Time compilation using GCC
- RTL typesafety
Some of the software I've written
- libgccjit: a branch of GCC allowing it to be built as a shared library for use in Just-In-Time compilation
- gcc-python-plugin: allowing you to write new GCC plugins in Python.
- cpychecker: a static analysis pass for GCC to find bugs in C extensions to Python, written in Python using gcc-python-plugin
- gdb Python hooks for debugging CPython itself
- gdb-heap, an extension to gdb for analyzing malloc/free
- squeal: a SQL-like syntax for use in shell pipelines
- asmdiff: tool for comparing objdump results
- gccinvocation: Python module for parsing GCC invocation lines
- jamais-vu: a tool for working with DejaGnu output
- firehose: a proposed common format for static analyzer output, along with a Python module for working with it
- mock-with-analysis: a way of rebuilding an RPM in mock, injecting static analysis, and capturing the result in Firehose format
- gcc-build: some scripts to make it easier to hack on GCC
Older stuff
- rpmgrok
- conglomerate: an XML editor aimed at non-technical users (I rewrote the prototype)