25000afe69
This commit updates all the wasm-tools crates that we use and enables fuzzing of the module linking proposal in our various fuzz targets. This also refactors some of the dummy value generation logic to not be fallible and to always succeed, the thinking being that we don't want to accidentally hide errors while fuzzing. Additionally instantiation is only allowed to fail with a `Trap`, other failure reasons are unwrapped.
Fuzzing Infrastructure for Wasmtime
This crate provides test case generators and oracles for use with fuzzing.
These generators and oracles are generally independent of the fuzzing engine
that might be using them and driving the whole fuzzing process (e.g. libFuzzer
or AFL). As such, this crate does not contain any actual fuzz targets
itself. Those are generally just a couple lines of glue code that plug raw input
from (for example) libFuzzer into a generator, and then run one or more
oracles on the generated test case.
If you're looking for the actual fuzz target definitions we currently have, they
live in wasmtime/fuzz/fuzz_targets/* and are driven by cargo fuzz and
libFuzzer.