Cairo Panic

Overview

Explain how panics work in Cairo, how to trigger them, and how to constrain panic behavior.

Quick Use

• •Read references/panic.md before answering.
• •Choose the smallest panic API that fits the error message you need.
• •Mention nopanic requirements when a caller demands panic-free code.

Response Checklist

• •Use panic for array-based errors, panic_with_felt252 for a single felt, and panic! for strings.
• •Note that panic unwinds, drops variables, and squashes dictionaries.
• •Use #[panic_with(...)] for wrapper functions that panic on None or Err.

Example Requests

• •"How do I panic with a short error code?"
• •"What does nopanic mean?"
• •"How do I create a wrapper that panics on None?"

Cairo by Example

• •Error handling
• •panic
• •panic! (core)