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A very old, out-of-date Red Hat People Page: http://people.redhat.com/dmalcolm | A very old, out-of-date Red Hat People Page: http://people.redhat.com/dmalcolm | ||
I'm currently working on GCC upstream. Previously I worked on the [[SIGs/Python|Python runtimes within Fedora]] and Red Hat Enterprise Linux. | I'm currently working on GCC upstream. Previously I worked on the [[SIGs/Python|Python runtimes within Fedora]] and Red Hat Enterprise Linux. | ||
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** Blog post: [https://developers.redhat.com/blog/2019/03/08/usability-improvements-in-gcc-9/ Usability improvements in GCC 9] | ** Blog post: [https://developers.redhat.com/blog/2019/03/08/usability-improvements-in-gcc-9/ Usability improvements in GCC 9] | ||
** Presentation (Cauldron 2018): [https://dmalcolm.fedorapeople.org/presentations/cauldron-2018/ Optimization records] | ** Presentation (Cauldron 2018): [https://dmalcolm.fedorapeople.org/presentations/cauldron-2018/ Optimization records] | ||
= Some of the software I've written = | |||
* [http://gcc.gnu.org/wiki/JIT libgccjit]: a branch of GCC allowing it to be built as a shared library for use in Just-In-Time compilation | |||
* [https://github.com/davidmalcolm/gcc-python-plugin/ gcc-python-plugin]: allowing you to write new GCC plugins in Python. | |||
* [https://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html cpychecker]: a static analysis pass for GCC to find bugs in C extensions to Python, written in Python using gcc-python-plugin | |||
* [http://docs.python.org/devguide/gdb.html#gdb-7-and-later gdb Python hooks] for debugging CPython itself | |||
* [https://fedorahosted.org/gdb-heap/ gdb-heap], an extension to gdb for analyzing malloc/free | |||
* [https://fedorahosted.org/squeal/ squeal]: a SQL-like syntax for use in shell pipelines | |||
* [https://github.com/davidmalcolm/asmdiff asmdiff]: tool for comparing objdump results | |||
* [https://github.com/fedora-static-analysis/gccinvocation gccinvocation]: Python module for parsing GCC invocation lines | |||
* [https://github.com/davidmalcolm/jamais-vu jamais-vu]: a tool for working with DejaGnu output | |||
* [https://github.com/fedora-static-analysis/firehose firehose]: a proposed common format for static analyzer output, along with a Python module for working with it | |||
* [https://github.com/fedora-static-analysis/mock-with-analysis mock-with-analysis]: a way of rebuilding an RPM in mock, injecting static analysis, and capturing the result in Firehose format | |||
* [https://github.com/davidmalcolm/gcc-build gcc-build]: some scripts to make it easier to hack on GCC | |||
= Older stuff = | = Older stuff = | ||
* [https://fedorahosted.org/rpmgrok/ rpmgrok] | * [https://fedorahosted.org/rpmgrok/ rpmgrok] | ||
* [http://www.conglomerate.org/ conglomerate]: an XML editor aimed at non-technical users (I rewrote the prototype) | * [http://www.conglomerate.org/ conglomerate]: an XML editor aimed at non-technical users (I rewrote the prototype) |
Revision as of 19:36, 18 September 2019
David Malcolm
Email: dmalcolm@redhat.com
My Fedora People page: http://dmalcolm.fedorapeople.org/
My blog: http://dmalcolm.livejournal.com/
A very old, out-of-date Red Hat People Page: http://people.redhat.com/dmalcolm
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
GCC work
- 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
- GCC 6:
- -Wmisleading-indentation vs “goto fail;”
- implemented underlined ranges of source, rather than just points
- GCC 7:
- Unit testing and RTL "frontend"
- Blog post: Testing... Testing… GCC
- Presentation (Cauldron 2016): Testing BoF
- Unit testing and RTL "frontend"
- GCC 8:
- Blog post: Usability improvements in GCC 8
- Presentation (Cauldron 2017): Diagnostic and location-tracking improvements for GCC 8
- GCC 9:
- Blog post: Usability improvements in GCC 9
- Presentation (Cauldron 2018): Optimization records
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)