Static rustc_lint::panic_fmt::PANIC_FMT

pub(in panic_fmt) static PANIC_FMT: &Lint

The panic_fmt lint detects panic!("..") with { or } in the string literal.

Example

panic!("{}");

{{produces}}

Explanation

panic!("{}") panics with the message "{}", as a panic!() invocation with a single argument does not use format_args!(). A future edition of Rust will interpret this string as format string, which would break this.