Curated Issues

C Good First Issues

Browse open source issues tagged with C in the issue metadata. Results stay focused on work that can become public contribution evidence.

1,912 matching issues

C

Slice signals

  • Average annotated difficulty: 2.7/5 across 1,912 issues.
  • 69% of 1,912 time estimates are one day or less.
Open
vpsm4_ex-armv8.pl implementation bug
branch: 3.5branch: 3.6branch: 4.0branch: masterhelp wantedtriaged: bug
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

openssl / openssl · #30409 · Mar 13, 2026 · C · 30,157 stars

0 comments0 reactions0 assignees
Open
Implement RFC 9861 KangarooTwelve and TurboSHAKE
help wantedtriaged: feature
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

openssl / openssl · #30304 · Mar 8, 2026 · C · 30,157 stars

11 comments0 reactions0 assignees
Open
Optimize process_record_quantum call order
discussionenhancementhelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

qmk / qmk_firmware · #26048 · Mar 5, 2026 · C · 20,368 stars

2 comments1 reaction0 assignees
Closed
[Bug] Documentation suggests using pyhidapi
bughelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

qmk / qmk_firmware · #26047 · Mar 3, 2026 · C · 20,368 stars

3 comments0 reactions0 assignees
Open
[Bug] OSL does not behave as MO when held
bughelp wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

qmk / qmk_firmware · #26045 · Mar 1, 2026 · C · 20,368 stars

2 comments0 reactions0 assignees
Open
Investigate slow tests
Testinggood first issue
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

cython / cython · #7542 · Feb 25, 2026 · Python · 8,663 stars

7 comments0 reactions0 assignees
Open
Sub-second cache
enhancementgood first issuein-analysisinvalidneeds-analysisrefined
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available

nginx / nginx · #1156 · Feb 24, 2026 · C · 30,331 stars

2 comments0 reactions1 assignee
Closed
Problem with moonsgeek m7
help wantedquestionstale
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

qmk / qmk_firmware · #26014 · Feb 13, 2026 · C · 20,368 stars

2 comments0 reactions0 assignees
Open
扩容新节点的vnodes数量为0
help wantedquestion
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available

taosdata / TDengine · #34512 · Feb 5, 2026 · C · 24,849 stars

1 comment0 reactions0 assignees
Open
Define C-variadic FFI functions on `nightly` feature
FFIGood First Issue
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available

PyO3 / pyo3 · #5777 · Feb 4, 2026 · Rust · 10,152 stars

0 comments0 reactions0 assignees