ruby/ruby
Feb 2025 – Feb 2025
1 Month active
Languages Used
C
Technical Skills
C programmingMemory managementSystem programming
HASUMI Hitoshi
PROFILE
Hasumi Hitoshi
Hasumi Kin enhanced the robustness of the Prism C extension in the ruby/ruby and ruby/prism repositories by improving zero-sized allocation handling for constant-id lists, ensuring list pointers are set to NULL when capacity is zero. This approach, implemented in C and Shell, addressed portability issues across calloc implementations and improved compatibility with MRuby, reducing crash risk in empty-list scenarios. Additionally, Hasumi delivered MRuby 3.4.0 installation support in rbenv/ruby-build by adding a new package definition with accurate metadata, streamlining CI and developer onboarding. The work demonstrated careful attention to memory management, build system maintenance, and cross-environment reliability.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
3Total
Bugs
2
Commits
3
Features
1
Lines of code
17
Activity Months2
Your Network
331 people
Work History
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Delivered MRuby 3.4.0 installation support in rbenv/ruby-build by adding a new installation package definition (download URL and checksum), enabling seamless MRuby 3.4.0 installs. No major bugs fixed this month; focus was on feature delivery, code quality, and repository health. This expands MRuby coverage and improves CI/dev onboarding.
1 Commits • 1 Features
Apr 1, 2025April 2025: Delivered MRuby 3.4.0 installation support in rbenv/ruby-build by adding a new installation package definition (download URL and checksum), enabling seamless MRuby 3.4.0 installs. No major bugs fixed this month; focus was on feature delivery, code quality, and repository health. This expands MRuby coverage and improves CI/dev onboarding.
April 2025
February 2025
2 Commits
Feb 1, 2025February 2025 monthly summary focusing on key accomplishments, major bugs fixed, and overall impact. Robust zero-sized allocation handling improvements were implemented for constant-id list initialization across the Prism C extension and its Ruby integration, setting list->ids to NULL when capacity is 0 to ensure portable calloc behavior and compatibility with free/realloc. This reduces crash risk in empty-list scenarios and supports MRuby integration. Commits: 1c32252df737d9de0022dd9bba86bcb42bae3986, 31162bf4261b2e740f6e26f2c2f22c36d3556cf0.
February 2025
2 Commits
Feb 1, 2025February 2025 monthly summary focusing on key accomplishments, major bugs fixed, and overall impact. Robust zero-sized allocation handling improvements were implemented for constant-id list initialization across the Prism C extension and its Ruby integration, setting list->ids to NULL when capacity is 0 to ensure portable calloc behavior and compatibility with free/realloc. This reduces crash risk in empty-list scenarios and supports MRuby integration. Commits: 1c32252df737d9de0022dd9bba86bcb42bae3986, 31162bf4261b2e740f6e26f2c2f22c36d3556cf0.
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CShell
Technical Skills
Build System ManagementC ProgrammingC programmingError HandlingMemory ManagementMemory managementSystem programming
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
ruby/prism
Feb 2025 – Feb 2025
1 Month active
Languages Used
C
Technical Skills
C ProgrammingError HandlingMemory Management
rbenv/ruby-build
Apr 2025 – Apr 2025
1 Month active
Languages Used
Shell
Technical Skills
Build System Management