27 lines
653 B
Rust
27 lines
653 B
Rust
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#![feature(backtrace)]
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#![allow(dead_code)]
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use std::backtrace::{Backtrace, BacktraceStatus};
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use std::error::Error;
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use std::fmt::{self, Display};
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#[derive(Debug)]
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struct E;
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impl Display for E {
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fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
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unimplemented!()
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}
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}
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impl Error for E {
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fn backtrace(&self) -> Option<&Backtrace> {
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let backtrace = Backtrace::capture();
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match backtrace.status() {
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BacktraceStatus::Captured | BacktraceStatus::Disabled | _ => {}
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}
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unimplemented!()
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}
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}
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