servo / servo/font-kit

Segfault when compiled for release on Mac

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Dominant language
Rust
Stars
840
Forks
137
Avg merge
4h 56m
Merged PRs (30d)
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Description

Some users of my project on MacOS Catalina are encountering a crash after I updated font-kit to 0.5. Unfortunately I don't have a MacOs machine on hand to repro the issue.

https://github.com/Kethku/neovide/issues/126

There has been some significant investigation of the issue within my project linked above. The issue doesn't happen in debug builds.

A more detailed crash log was reported here: https://github.com/Kethku/neovide/files/4241972/crash_log.txt Although I have suspicions that this may be a different issue as he reported the problem didn't go away when compiling for debug.

At some point I may be able to get access to a mac machine and build a minimal repro, but it probably won't be for a while... Any insight into what might be going on would be greatly appreciated.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the investigation in neovide issue #126 and the linked crash_log.txt, then compare the reported release-build crash with debug builds on macOS Catalina. The issue is done when the cause is confirmed and the release build no longer segfaults under the affected conditions.

Written by the indexing model from the issue text.

Assessment

Tech stack
macos, rust
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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