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Eric Traut 73ed30d7e5 Avoid hang when tool's process spawns grandchild that shares stderr/stdout (#6575 )

We've received many reports of codex hanging when calling certain tools.
[Here](https://github.com/openai/codex/issues/3204) is one example. This
is likely a major cause. The problem occurs when
`consume_truncated_output` waits for `stdout` and `stderr` to be closed
once the child process terminates. This normally works fine, but it
doesn't handle the case where the child has spawned grandchild processes
that inherits `stdout` and `stderr`.

The fix was originally written by @md-oai in [this
PR](https://github.com/openai/codex/pull/1852), which has gone stale.
I've copied the original fix (which looks sound to me) and added an
integration test to prevent future regressions.

73ed30d7e5 · 2025-11-12 20:08:12 -08:00

History

src

Avoid hang when tool's process spawns grandchild that shares stderr/stdout (#6575 )

2025-11-12 20:08:12 -08:00

templates

Changes to sandbox command assessment feature based on initial experiment feedback (#6091 )

2025-11-01 14:52:23 -07:00

tests

Avoid hang when tool's process spawns grandchild that shares stderr/stdout (#6575 )

2025-11-12 20:08:12 -08:00

Cargo.toml

Use codex-linux-sandbox in unified exec (#6480 )

2025-11-10 17:17:09 -08:00

gpt_5_1_prompt.md

Add gpt-5.1 model definitions (#6551 )

2025-11-12 12:44:36 -08:00

gpt_5_codex_prompt.md

feat: clarify that gpt-5-codex should not amend commits unless requested (#6333 )

2025-11-06 11:42:47 -08:00

prompt.md

Add file reference guidelines to gpt-5 prompt (#3651 )

2025-09-15 08:35:30 -07:00

README.md

docs: align sandbox defaults, dedupe sections and improve getting started guide (#5357 )

2025-10-19 16:41:10 -07:00

review_prompt.md

docs: Fix markdown list item spacing in codex-rs/core/review_prompt.md (#4144 )

2025-10-30 17:39:21 -07:00

README.md

codex-core

This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.

Dependencies

Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:

macOS

Expects /usr/bin/sandbox-exec to be present.

Linux

Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.

All Platforms

Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.