`EncCursor` is a variant of `Cursor` that allows updating CLIF while keeping its encodings up to date, given a particular ISA. However, new (MachInst) backends don't use the encodings, and the `TargetIsaAdapter` shim will panic if any encoding-related method is called. This PR avoids those panics. Fixes #1809.
This directory contains .wasm binaries generated during fuzzing that uncovered
a bug, and which we now use as regression tests in ../fuzzing.rs.