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// Copyright 2021 bluss and ndarray developers.
//
// 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.
/// Guard value that will abort if it is dropped.
/// To defuse, this value must be forgotten before the end of the scope.
///
/// The string value is added to the message printed if aborting.
#[must_use]
pub(crate) struct AbortIfPanic(pub(crate) &'static &'static str);
impl AbortIfPanic {
/// Defuse the AbortIfPanic guard. This *must* be done when finished.
#[inline]
pub(crate) fn defuse(self) {
std::mem::forget(self);
}
}
impl Drop for AbortIfPanic {
// The compiler should be able to remove this, if it can see through that there
// is no panic in the code section.
fn drop(&mut self) {
#[cfg(feature="std")]
{
eprintln!("ndarray: panic in no-panic section, aborting: {}", self.0);
std::process::abort()
}
#[cfg(not(feature="std"))]
{
// no-std uses panic-in-panic (should abort)
panic!("ndarray: panic in no-panic section, bailing out: {}", self.0);
}
}
}