std::panic!
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macro_rules! panic { () => { ... }; ($msg:expr) => { ... }; ($fmt:expr, $($arg:tt)+) => { ... }; }
The entry point for panic of Rust threads.
This macro is used to inject panic into a Rust thread, causing the thread to
unwind and panic entirely. Each thread's panic can be reaped as the
Box<Any>
type, and the single-argument form of the panic!
macro will be
the value which is transmitted.
The multi-argument form of this macro panics with a string and has the
format!
syntax for building a string.
Examples
panic!(); panic!("this is a terrible mistake!"); panic!(4); // panic with the value of 4 to be collected elsewhere panic!("this is a {} {message}", "fancy", message = "message");