claude-code - 💡(How to fix) Fix [Bug] Claude fails to self-correct on file read-before-write errors [1 comments, 2 participants]

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anthropics/claude-code#55937Fetched 2026-05-05 06:02:28
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Error Message

⏺ Update(/Users/ikari/src/gada/runtime/bench/bench_runner.adb)
⎿  Error: File has not been read yet. Read it first before writing to it.

✻ Brewed for 18m 57s · 6 shells still running

Code Example

Update(/Users/ikari/src/gada/runtime/bench/bench_runner.adb)                    
  ⎿  Error: File has not been read yet. Read it first before writing to it.                                            
                                                                                                                       
 Brewed for 18m 57s · 6 shells still running

---

[{"error":"Error: ensureToolResultPairing: repaired missing tool_result blocks (10 -> 10 messages). Message structure: [0] user; [1] user; [2] assistant(id=msg_0133QBamcwnbLmZbTzzbVQRv, tool_uses=[toolu_01MFQ7Rkn2jAVdniz1t37HUG]); [3] user(tool_results=[toolu_01MFQ7Rkn2jAVdniz1t37HUG]); [4] assistant(id=msg_01XBtUVNv3uXTnUXmvfewWX8, tool_uses=[toolu_01Sa2cJwAm1VJuZU8wbUgkZj]); [5] user(tool_results=[toolu_01Sa2cJwAm1VJuZU8wbUgkZj]); [6] assistant(id=msg_01T3ErZ5FrjHRvbMGqJxqHCf, tool_uses=[toolu_016274MAQw38RzYdPtDCGA41]); [7] user(tool_results=[toolu_016274MAQw38RzYdPtDCGA41]); [8] assistant(id=msg_01GrrXwo9qYj93Vfvp49H93i, tool_uses=[toolu_01C8sRM56FBCL2Bux4mpNo8U]); [9] user\n    at YQ7 (/$bunfs/root/src/entrypoints/cli.js:5385:10309)\n    at vJK (/$bunfs/root/src/entrypoints/cli.js:8908:10975)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-02T21:08:52.827Z"}]
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Bug Description Claude stops on 'file must be read before write' and other errors, instead of self correcting. For example:

                                                                      
⏺ Update(/Users/ikari/src/gada/runtime/bench/bench_runner.adb)                    
  ⎿  Error: File has not been read yet. Read it first before writing to it.                                            
                                                                                                                       
✻ Brewed for 18m 57s · 6 shells still running

This happens often and is unpredictable.

Environment Info

  • Platform: darwin
  • Terminal: WarpTerminal
  • Version: 2.1.126
  • Feedback ID: e5772239-aaa4-4b64-997d-59d119fbca99

Errors

[{"error":"Error: ensureToolResultPairing: repaired missing tool_result blocks (10 -> 10 messages). Message structure: [0] user; [1] user; [2] assistant(id=msg_0133QBamcwnbLmZbTzzbVQRv, tool_uses=[toolu_01MFQ7Rkn2jAVdniz1t37HUG]); [3] user(tool_results=[toolu_01MFQ7Rkn2jAVdniz1t37HUG]); [4] assistant(id=msg_01XBtUVNv3uXTnUXmvfewWX8, tool_uses=[toolu_01Sa2cJwAm1VJuZU8wbUgkZj]); [5] user(tool_results=[toolu_01Sa2cJwAm1VJuZU8wbUgkZj]); [6] assistant(id=msg_01T3ErZ5FrjHRvbMGqJxqHCf, tool_uses=[toolu_016274MAQw38RzYdPtDCGA41]); [7] user(tool_results=[toolu_016274MAQw38RzYdPtDCGA41]); [8] assistant(id=msg_01GrrXwo9qYj93Vfvp49H93i, tool_uses=[toolu_01C8sRM56FBCL2Bux4mpNo8U]); [9] user\n    at YQ7 (/$bunfs/root/src/entrypoints/cli.js:5385:10309)\n    at vJK (/$bunfs/root/src/entrypoints/cli.js:8908:10975)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-02T21:08:52.827Z"}]

extent analysis

TL;DR

The issue may be resolved by ensuring that files are read before attempting to write to them, potentially by modifying the code to handle file operations in a more sequential manner.

Guidance

  • Review the code in bench_runner.adb to identify where file writes are occurring without prior reads, and modify the logic to ensure reads happen first.
  • Investigate the ensureToolResultPairing function in cli.js to understand how it handles file operations and tool result pairings, as the error suggests a potential issue with missing tool result blocks.
  • Consider adding error handling or logging to better understand the sequence of events leading up to the error, which could help identify why files are not being read before being written to.
  • Look into the tool_uses and tool_results structures in the error message to see if there's a pattern or specific tool usage that's causing the issue.

Notes

The provided information does not give a clear indication of the root cause, but it suggests issues with file handling and tool result pairings. Without more context or code, it's challenging to provide a definitive solution.

Recommendation

Apply workaround: Modify the code to ensure sequential file operations, reading files before writing to them, as this seems to be a common point of failure based on the error messages provided.

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