codex - 💡(How to fix) Fix Doubling down on bad assertion [2 comments, 3 participants]

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openai/codex#18111Fetched 2026-04-17 08:32:43
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What version of Codex CLI is running?

codex-cli 0.120.0

What subscription do you have?

max

Which model were you using?

gpt-5.4

What platform is your computer?

Darwin 25.3.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

ghostty

What issue are you seeing?

The model adding a bad assertion and then after me pointing this out making the code math the bad assertion.

What steps can reproduce the bug?

Uploaded thread: 019d9573-c71d-7260-bcb8-5b0d66363381

What is the expected behavior?

Dropping the bad assertion instead of adding code

Additional information

No response

extent analysis

TL;DR

The issue may be resolved by reporting the bad assertion to the model developers, as the current behavior is to modify the code to match the assertion instead of dropping it.

Guidance

  • Review the uploaded thread (019d9573-c71d-7260-bcb8-5b0d66363381) to understand the specific bad assertion and code changes made by the model.
  • Verify that the expected behavior is correctly defined, as the model is currently modifying the code to match the assertion.
  • Check if there are any existing reports or discussions related to this issue in the Codex CLI community or documentation.
  • Consider reaching out to the Codex CLI support team or community forums for further assistance, as this issue may require changes to the model's behavior.

Notes

The provided information does not include specific details about the bad assertion or the code changes made by the model, which may be necessary to fully understand and resolve the issue.

Recommendation

Apply workaround: Report the issue to the model developers or support team, as the current behavior is not aligning with the expected behavior of dropping the bad assertion.

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codex - 💡(How to fix) Fix Doubling down on bad assertion [2 comments, 3 participants]