Reading additional input from stdin...
OpenAI Codex v0.153.4
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workdir: /tmp/harnessfacts-ERsnN7/fixture
model: gpt-6-astra
provider: openai
approval: never
sandbox: workspace-write [workdir, /tmp, $TMPDIR]
reasoning effort: none
reasoning summaries: none
session id: 01a08088-0e5a-7a03-9ede-0c460f4cdefd
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user
Write exactly EXIT_SUCCESS into result.txt in the current directory, then finish the task successfully.
codex
I’ll write `EXIT_SUCCESS` to `result.txt`.

exec
/bin/bash -lc 'printf %s EXIT_SUCCESS > result.txt' in /tmp/harnessfacts-ERsnN7/fixture
 succeeded in 0ms:
codex
Wrote exactly `EXIT_SUCCESS` to `result.txt`.
tokens used
15,196