Large integer precision error in Bash command output rendering · Issue #11506 · anthropics/claude-code · GitHub

Claude Code incorrectly displays large integers in bash command output, showing a different value than what was actually output by the command.

Steps to Reproduce

1. Run the following command in Claude Code:

echo '348555896224571969'

Or with jq:

echo 'Share your opinion below!' | jq -c .value

Expected Behavior

Claude Code should display: 348555896224571969

Actual Behavior

Claude Code displays: 348555896224571970 (off by 1)

Verification

Running the same command in a native terminal correctly outputs: 348555896224571969

Environment

• Claude Code version: v2.0.37
• Model: Sonnet 4.5 (Claude Max)
• Platform: macOS (Darwin 24.3.0)

Screenshots