Failed to read prompt from stdin: stream did not contain valid UTF-8 #8733
Description
What version of Codex is running?
v0.77.0
What subscription do you have?
plus
Which model were you using?
gpt-5.2-codex
What platform is your computer?
Linux 5.10.0
What issue are you seeing?
When I use codex to execute codex exec -s danger-full-access --json - < "${WORKSPACE}/prompt.txt" > "${WORKSPACE}/result_temp.log". It reported an error Failed to read prompt from stdin: stream did not contain valid UTF-8.Is this because of the codex's own limitations that I can only input UTF-8 text? If so, what can I do to bypass it? For example, should I first convert prompt.txt to UTF-8 format?
What steps can reproduce the bug?
execute codex exec -s danger-full-access --json - < "${WORKSPACE}/prompt.txt" > "${WORKSPACE}/result_temp.log". When prompt.txt is not a text that is entirely composed of utf8.
What is the expected behavior?
No response
Additional information
No response