Native heap leak: 1.15B identical 176-byte objects (189GB) in worker process during active tool use
증상
Claude Code worker process leaks ~189GB of native heap memory over a 10-hour active session. The leak consists of ~1.15 billion identical 176-byte malloc chunks on the glibc [heap], entirely outside Bun’s mimalloc-managed memory.
원인
Agent encountered an unexpected state or unhandled error condition outside the standard error handling path.
해결법
We built an LD_PRELOAD guard that caps the leak. No binary modification needed.
👉 https://github.com/dalsoop/claude-code-memory-leak-fix
git clone https://github.com/dalsoop/claude-code-memory-leak-fix.git
cd claude-code-memory-leak-fix
make && sudo make install
claude-safe # drop-in replacement for 'claude'
- Below 10GB: zero overhead (passthrough)
- Above 10GB: pools leaked 160-byte objects to stop heap growth
kill -USR1 $(pgrep -n claude)to check stats anytime
Testing confirmed free() is never called for these objects:
```
[malloc-guard] 160B alloc=17 f
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/36956
Source: https://github.com/anthropics/claude-code/issues/36956
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