Module unwind 

Unwinding runtime for Miri.

The core pieces of the runtime are:

• An implementation of catch_unwind that pushes the invoked stack frame with some extra metadata derived from the panic-catching arguments of catch_unwind.
• A hack in libpanic_unwind that calls the miri_start_unwind intrinsic instead of the target-native panic runtime. (This lives in the rustc repo.)
• An implementation of miri_start_unwind that stores its argument (the panic payload), and then immediately returns, but on the unwind edge (not the normal return edge), thus initiating unwinding.
• A hook executed each time a frame is popped, such that if the frame pushed by catch_unwind gets popped during unwinding, we take the panic payload and store it according to the extra metadata we remembered when pushing said frame.

Re-exports

use rustc_abi::ExternAbi; 🔒

use rustc_middle::mir; 🔒

use rustc_target::spec::PanicStrategy; 🔒

use crate::*; 🔒

Structs

CatchUnwindData

Holds all of the relevant data for when unwinding hits a try frame.

Traits

EvalContextExt