Frequent crash on Mac OS X on pthread_cond_wait

[ankrgyl]

Issue Description

Ghostty crashes a few times a day on my laptop.

Expected Behavior

It shouldn't crash

Actual Behavior

It crashes

Reproduction Steps

I am not sure exactly how to reproduce it, but it happens a few times per day on my computer.

Ghostty Logs

I found crash files and loaded them into my own Sentry account (+ reported them to your DSN) and see an error:


EXC_BAD_ACCESS / KERN_INVALID_ADDRESS / 0x198
Fatal Error: EXC_BAD_ACCESS / KERN_INVALID_ADDRESS / 0x198

plus stack trace:

<unknown>
pthread_cond_broadcast
<unknown>

### Ghostty Version

```text
Ghostty 1.2.3

Version
  - version: 1.2.3
  - channel: stable
Build Config
  - Zig version   : 0.14.1
  - build mode    : builtin.OptimizeMode.ReleaseFast
  - app runtime   : apprt.Runtime.none
  - font engine   : font.main.Backend.coretext
  - renderer      : renderer.generic.Renderer(renderer.Metal)
  - libxev        : kqueue

OS Version Information

Mac OS X 15.5 (24F74)

(Linux only) Display Server

None

(Linux only) Desktop Environment/Window Manager

No response

Minimal Ghostty Configuration

font-family = "Menlo"
font-size = 11
theme = "3024 Night"

Additional Relevant Configuration

No response

I acknowledge that:

• I have reviewed the FAQ and confirm that my issue is NOT among them.
• I have searched the Ghostty repository (both open and closed Discussions and Issues) and confirm this is not a duplicate of an existing issue or discussion.
• I have checked the "Preview" tab on all text fields to ensure that everything looks right, and have wrapped all configuration and code in code blocks with a group of three backticks (```) on separate lines.

[mitchellh]

Can you try switching over to tip/nightly releases? We've fixed a number of crashes and I wonder if it's fixed there. If you're hesitant to do that, I understand, but we'll probably need more info in order to reproduce this.

[ankrgyl]

Very happy to. I'll try and report back

[ankrgyl]

It crashed! I believe it has something to do with plugging into an external monitor. I installed nightly, and went on a trip (where I did not have one). I just returned home, plugged in the external monitor, and it crashed right away.