Module generators 

Test case generators.

Test case generators take raw, unstructured input from a fuzzer (e.g. libFuzzer) and translate that into a structured test case (e.g. a valid Wasm binary).

These are generally implementations of the Arbitrary trait, or some wrapper over an external tool, such that the wrapper implements the Arbitrary trait for the wrapped external tool.

Re-exports

pub use exception_ops::ExceptionOps;

pub use gc_access::GcAccess;

pub use gc_ops::limits::GcOpsLimits;

pub use gc_ops::ops::GcOps;

Modules

api

Generating sequences of Wasmtime API calls.

exception_ops

Generator for exception-handling fuzz test cases.

gc_access

Generate Wasm modules that exercise GC object creation, field access, and assertion patterns across different heap initialization states.

gc_ops

GC ops generator: split from the previous monolithic file.

Structs

Config

Configuration for wasmtime::Config and generated modules for a session of fuzzing.

HeapImage

A memory heap image.

MemoryAccesses

A description of a memory config, image, etc… that can be used to test memory accesses.

MemoryConfig

Represents a normal memory configuration for Wasmtime with the given static and dynamic memory sizes.

ModuleConfig

Default module-level configuration for fuzzing Wasmtime.

PoolingAllocationConfig

Configuration for wasmtime::PoolingAllocationStrategy.

SingleInstModule

Configure a single instruction module.

Stacks

Generate a Wasm module that keeps track of its current call stack, to compare to the host.

WasmtimeConfig

Configuration related to wasmtime::Config and the various settings which can be tweaked from within.

WastTest

A wast test from this repository.

Enums

AsyncConfig

Configuration for async support within a store.

CodegenSettings

Choose between matching the host architecture or a cross-compilation target.

CompilerStrategy

Compiler to use.

DiffValue

A value passed to and from evaluation. Note that reference types are not (yet) supported.

DiffValueType

Enumerate the supported value types.

InstanceAllocationStrategy

Configuration for wasmtime::InstanceAllocationStrategy.