[BUG] Installer crash (Bun has crashed)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When I try to install claude code I get a segmentation fault in the installer (bun). I opened this issue for oven/bun, and the auto-responder is suggesting this bug may have been fixed in a more recent version of bun (the latest version of Bun is v1.2.22, but the standalone executable is running Bun v1.2.19).

What Should Happen?

Claude should be installed successfully

Error Messages/Logs

+ set -e
+ TARGET=
+ [[ -n '' ]]
+ GCS_BUCKET=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases
+ DOWNLOAD_DIR=/Users/sandvault-pat/.claude/downloads
+ DOWNLOADER=
+ command -v curl
+ DOWNLOADER=curl
+ HAS_JQ=false
+ command -v jq
+ HAS_JQ=true
+ case "$(uname -s)" in
++ uname -s
+ os=darwin
+ case "$(uname -m)" in
++ uname -m
+ arch=arm64
+ '[' darwin = linux ']'
+ platform=darwin-arm64
+ mkdir -p /Users/sandvault-pat/.claude/downloads
++ download_file https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/stable
++ local url=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/stable
++ local output=
++ '[' curl = curl ']'
++ '[' -n '' ']'
++ curl -fsSL https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/stable
+ version=1.0.117
++ download_file https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/manifest.json
++ local url=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/manifest.json
++ local output=
++ '[' curl = curl ']'
++ '[' -n '' ']'
++ curl -fsSL https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/manifest.json
+ manifest_json='{
  "version": "1.0.117",
  "buildDate": "2025-09-16T23:18:39Z",
  "platforms": {
    "darwin-arm64": {
      "checksum": "5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133",
      "size": 74004624
    },
    "darwin-x64": {
      "checksum": "c7593ee7dbe90c7bb31bdb9a7a4f032c7f0a9e01996dd900f5187c3a269ca1be",
      "size": 79645920
    },
    "linux-arm64": {
      "checksum": "4183d73c3fdf8cdd3cea0ce3d62b4db7e7855e4eb4d969c00d3fa43e6c77fc46",
      "size": 108934267
    },
    "linux-x64": {
      "checksum": "db0100f8e78074d387041ed3558695a9e6c12f650860fb38c0ab52e885f27ab0",
      "size": 115550071
    },
    "linux-arm64-musl": {
      "checksum": "5f44002e7c199f9cfa1c6ec51dc2ec2457913ffe573342c744daad1a274b7e96",
      "size": 103786531
    },
    "linux-x64-musl": {
      "checksum": "25dba9b2375e40e4a2cbad508f3bec189052009ec0fd4b4f92a80451bdf7e1a0",
      "size": 107923759
    },
    "win32-x64": {
      "checksum": "d153db50980d73f1d6c34701260e56c36912f93451412e7f06a08e5a93b1d8ef",
      "size": 132890112
    }
  }
}'
+ '[' true = true ']'
++ echo '{
  "version": "1.0.117",
  "buildDate": "2025-09-16T23:18:39Z",
  "platforms": {
    "darwin-arm64": {
      "checksum": "5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133",
      "size": 74004624
    },
    "darwin-x64": {
      "checksum": "c7593ee7dbe90c7bb31bdb9a7a4f032c7f0a9e01996dd900f5187c3a269ca1be",
      "size": 79645920
    },
    "linux-arm64": {
      "checksum": "4183d73c3fdf8cdd3cea0ce3d62b4db7e7855e4eb4d969c00d3fa43e6c77fc46",
      "size": 108934267
    },
    "linux-x64": {
      "checksum": "db0100f8e78074d387041ed3558695a9e6c12f650860fb38c0ab52e885f27ab0",
      "size": 115550071
    },
    "linux-arm64-musl": {
      "checksum": "5f44002e7c199f9cfa1c6ec51dc2ec2457913ffe573342c744daad1a274b7e96",
      "size": 103786531
    },
    "linux-x64-musl": {
      "checksum": "25dba9b2375e40e4a2cbad508f3bec189052009ec0fd4b4f92a80451bdf7e1a0",
      "size": 107923759
    },
    "win32-x64": {
      "checksum": "d153db50980d73f1d6c34701260e56c36912f93451412e7f06a08e5a93b1d8ef",
      "size": 132890112
    }
  }
}'
++ jq -r '.platforms["darwin-arm64"].checksum // empty'
+ checksum=5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133
+ '[' -z 5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133 ']'
+ [[ ! 5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133 =~ ^[a-f0-9]{64}$ ]]
+ binary_path=/Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64
+ download_file https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/darwin-arm64/claude /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64
+ local url=https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/darwin-arm64/claude
+ local output=/Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64
+ '[' curl = curl ']'
+ '[' -n /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64 ']'
+ curl -fsSL -o /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64 https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/1.0.117/darwin-arm64/claude
+ '[' darwin = darwin ']'
++ shasum -a 256 /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64
++ cut '-d ' -f1
+ actual=5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133
+ '[' 5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133 '!=' 5201ebfcc3a98228ad9d1121d53a95270a2be9046ba9c28d93a5c57b04b20133 ']'
+ chmod +x /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64
+ echo 'Setting up Claude Code...'
Setting up Claude Code...
+ /Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64 install

Installing Claude Code native build stable...
============================================================
Bun v1.2.19 (aad3abea) macOS Silicon
macOS v15.6.1
CPU: fp aes crc32 atomics
Args: "/Users/sandvault-pat/.claude/downloads/claude-1.0.117-darwin-arm64" "install"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) fetch(8) jsc spawn(13) standalone_executable
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:domain" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/win32" "node:perf_hooks" "node:process" "node:querystring" "node:stream" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "undici" "ws" "node-fetch" "node:inspector" "node:http2"
Elapsed: 1835ms | User: 672ms | Sys: 171ms
RSS: 0.37GB | Peak: 0.37GB | Commit: 1.07GB | Faults: 60 | Machine: 0.07TB

panic: Bus error at address 0x106978F90
oh no: Bun has crashed. This indicates a bug in Bun, not your code.


### Stack Trace (bun.report)

Bun v1.2.19 ([`aad3abe`](<https://github.com/oven-sh/bun/tree/aad3abeaddfb9f875ab6675dbc008a969f9fbe7d>)) on macos aarch64 [_]

Bus error at address 0x1067C4F90

- *1 unknown/js code*
- [`FTLLowerDFGToB3.cpp:263`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp#L263>): `JSC::FTL::(...)::LowerDFGToB3::lower`
- [`FTLLowerDFGToB3.cpp:263`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp#L263>): `JSC::FTL::(...)::LowerDFGToB3::lower`
- [`FTLLowerDFGToB3.cpp:25041`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp#L25041>): `JSC::FTL::lowerDFGToB3`
- [`DFGPlan.cpp:474`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/dfg/DFGPlan.cpp#L474>): `JSC::DFG::Plan::compileInThreadImpl`
- [`JITPlan.cpp:270`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/jit/JITPlan.cpp#L270>): `JSC::JITPlan::compileInThread`
- [`JITWorklistThread.cpp:134`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/JavaScriptCore/jit/JITWorklistThread.cpp#L134>): `JSC::JITWorklistThread::work`
- [`AutomaticThread.cpp:225`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/WTF/wtf/AutomaticThread.cpp#L225>): `WTF::Detail::CallableWrapper<WTF::AutomaticThread::start(...)::$_0, void>::call`
- [`Function.h:82`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/WTF/wtf/Function.h#L82>): `WTF::Thread::entryPoint`
- [`ThreadingPOSIX.cpp:255`](<https://github.com/oven-sh/WebKit/blob/1098cc50652ab1eab171f58f7669e19ca6c276ae/Source/WTF/wtf/posix/ThreadingPOSIX.cpp#L255>): `WTF::wtfThreadEntryPoint`

Features: Bun.stderr, Bun.stdin, Bun.stdout, fetch, jsc, spawn, standalone\_executable, standalone\_executable

<!-- from bun.report: 3jE55d0GDt9r2TisKV4q -->

<sub>Sentry Issue: <strong><a href="https://bun-p9.sentry.io/issues/6786649993/">BUN-SD1</a></strong></sub>

Steps to Reproduce

env \
NODE_ENV=dev \
NODE_DEBUG=* \
DEBUG=* \
curl -fsSL https://claude.ai/install.sh | bash -x

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.0.117

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

This crash is 100% reproducible on my computer; what additional information can I provide to help diagnose the issue?