uber/h3

Update clang and add ARM msan

Open

#979 opened on Mar 6, 2025

View on GitHub
 (0 comments) (0 reactions) (0 assignees)C (585 forks)github user discovery
help wanted

Repository metrics

Stars
 (6,310 stars)
PR merge metrics
 (PR metrics pending)

Description

As discussed in https://github.com/uber/h3/pull/975, we would like the ability to run -fsanitize=memory -fno-sanitize-recover=memory on ARM, which we think is unblocked by upgrading clang.

Note: This might also affect the version of clang-format that the project uses, which is currently at 14.

@isaacbrodsky, let me know if I'm missing anything or got something wrong!

Contributor guide

Research direction
Check the current clang version in the build system and update it to a version that supports ARM msan. Then add the necessary compiler flags for memory sanitization on ARM. Verify with the linked PR discussion for constraints.
Tech stack
c
Domain
backendinfrastructure
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
CCMake
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60