[BUG] Claude crashes if interrupted during command execution

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?

If I interrupt Claude while it's in the process of running a long-running Bash tool call, it crashes the process. This only seems to happen if manually interrupted (ESC) and only if Bash is running.

What Should Happen?

Claude should interrupt and continue the conversation as normal without crashing the process.

Error Messages/Logs

153 | Total duration (API):  ${YQ(gV())}
154 | Total duration (wall): ${YQ(HYT())}
155 | Total code changes:    ${vCT()} ${vCT()===1?"line":"lines"} added, ${gCT()} ${gCT()===1?"line":"lines"} removed
156 | ${R}`)}function ve9(){xe9.useEffect(()=>{let T=()=>{if(X9R())process.stdout.write(`
157 | `+PnR()+`
158 | `);wnR()};return process.on("exit",T),()=>{process.off("exit",T)}},[])}function IFH(T,R){return Math.round(T*R)/R}function Q9R(T,R,A){ngA(T,R,A),BuA()?.add(T,{model:A}),CYT()?.add(R.input_tokens,{type:"input",model:A}),CYT()?.add(R.output_tokens,{type:"output",model:A}),CYT()?.add(R.cache_read_input_tokens??0,{type:"cacheRead",model:A}),CYT()?.add(R.cache_creation_input_tokens??0,{type:"cacheCreation",model:A})}var xe9;var $z=X(()=>{t_();T0();X9();lA();lA();lA();xe9=S(HT(),1)});function QFH(T,R){return R.input_tokens/1e6*T.inputTokens+R.output_tokens/1e6*T.outputTokens+(R.cache_read_input_tokens??0)/1e6*T.promptCacheReadTokens+(R.cache_creation_input_tokens??0)/1e6*T.promptCacheWriteTokens+(R.server_tool_use?.web_search_requests??0)*T.webSearchRequests}function XFH(T){return T.input_tokens+(T.cache_read_input_tokens??0)+(T.cache_creation_input_tokens??0)}function ZFH(T,R){let A=EE(T),D=ge9[A];if(D===eAT&&XFH(R)>200000)return ynR;if(!D)return o("tengu_unknown_model_cost",{model:T,shortName:A}),xzR(),ge9[EE(me9 | ... truncated

SystemError: kill() failed: EPERM: Operation not permitted
 syscall: "kill",
   errno: 1,
    code: "EPERM"

Steps to Reproduce

1. Open Claude on a codebase
2. Ask Claude to run tests or some other long-running command
3. Hit ESC

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.72 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_