Due to reliance on core_intrinsics it is necessary to develop using nightly Rust, but there are stubs in place so a production build will not require nightly.
I recently released version 0.2 which includes no_std support and adds optional log message arguments to the ensure macro.
Also, this is providing motivation to want to stabilize a breakpoint mechanism, perhaps `core::arch::breakpoint()`. I'm going to propose an API Change Proposal (ACP) to the libs-api team to see if we can provide that in stable Rust.
This is the macro I use for example:
#[doc(hidden)]
pub use libc as __libc;
// This is a macro instead of a function to ensure the debugger shows the breakpoint as being at
// the caller instead of this file.
#[cfg(unix)]
#[macro_export]
macro_rules! breakpoint {
() => {
unsafe {
use $crate::__libc as libc;
libc::raise(libc::SIGTRAP);
}
};
}