You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
2.1 KiB
59 lines
2.1 KiB
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
|
// file at the top-level directory of this distribution and at |
|
// http://rust-lang.org/COPYRIGHT. |
|
// |
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
|
// option. This file may not be copied, modified, or distributed |
|
// except according to those terms. |
|
|
|
//! Implementation of various bits and pieces of the `panic!` macro and |
|
//! associated runtime pieces. |
|
|
|
use any::Any; |
|
use fmt; |
|
use __core::fmt::Display; |
|
|
|
///The compiler wants this to be here. Otherwise it won't be happy. And we like happy compilers. |
|
#[lang = "eh_personality"] |
|
extern fn eh_personality() {} |
|
|
|
/// Entry point of panic from the libcore crate. |
|
#[lang = "panic_fmt"] |
|
extern fn rust_begin_panic(msg: fmt::Arguments, file: &'static str, line: u32) -> ! { |
|
begin_panic_fmt(&msg, &(file, line)) |
|
} |
|
|
|
/// The entry point for panicking with a formatted message. |
|
/// |
|
/// This is designed to reduce the amount of code required at the call |
|
/// site as much as possible (so that `panic!()` has as low an impact |
|
/// on (e.g.) the inlining of other functions as possible), by moving |
|
/// the actual formatting into this shared place. |
|
#[unstable(feature = "libstd_sys_internals", |
|
reason = "used by the panic! macro", |
|
issue = "0")] |
|
#[inline(never)] #[cold] |
|
pub fn begin_panic_fmt(msg: &fmt::Arguments, file_line: &(&'static str, u32)) -> ! { |
|
use fmt::Write; |
|
|
|
let mut s = String::new(); |
|
let _ = s.write_fmt(*msg); |
|
begin_panic(s, file_line); |
|
} |
|
|
|
/// This is where the main panic logic happens. |
|
#[inline(never)] |
|
#[cold] |
|
pub fn begin_panic<M: Any + Send + Display>(msg: M, file_line: &(&'static str, u32)) -> ! { |
|
let msg = Box::new(msg); |
|
let (file, line) = *file_line; |
|
|
|
println!("--------------------------------------------------"); |
|
println!("PANIC in {} at line {}:", file, line); |
|
println!(" {}", msg); |
|
println!("\x1b[29;00H--------------------------------------------------"); |
|
|
|
loop {} |
|
}
|
|
|