4c82da440a
* Move most wasmtime tests into one test suite This commit moves most wasmtime tests into a single test suite which gets compiled into one executable instead of having lots of test executables. The goal here is to reduce disk space on CI, and this should be achieved by having fewer executables which means fewer copies of `libwasmtime.rlib` linked across binaries on the system. More importantly though this means that DWARF debug information should only be in one executable rather than duplicated across many. * Share more build caches Globally set `RUSTFLAGS` to `-Dwarnings` instead of individually so all build steps share the same value. * Allow some dead code in cranelift-codegen Prevents having to fix all warnings for all possible feature combinations, only the main ones which come up. * Update some debug file paths
47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
//! Fuzzing infrastructure for Wasmtime.
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#![deny(missing_docs, missing_debug_implementations)]
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pub mod generators;
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pub mod oracles;
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/// One time start up initialization for fuzzing:
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///
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/// * Enables `env_logger`.
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///
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/// * Restricts `rayon` to a single thread in its thread pool, for more
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/// deterministic executions.
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///
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/// If a fuzz target is taking raw input bytes from the fuzzer, it is fine to
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/// call this function in the fuzz target's oracle or in the fuzz target
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/// itself. However, if the fuzz target takes an `Arbitrary` type, and the
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/// `Arbitrary` implementation is not derived and does interesting things, then
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/// the `Arbitrary` implementation should call this function, since it runs
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/// before the fuzz target itself.
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pub(crate) fn init_fuzzing() {
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static INIT: std::sync::Once = std::sync::Once::new();
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INIT.call_once(|| {
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let _ = env_logger::try_init();
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let _ = rayon::ThreadPoolBuilder::new()
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.num_threads(1)
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.build_global();
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})
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}
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/// Create default fuzzing config with given strategy
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pub(crate) fn fuzz_default_config(
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strategy: wasmtime::Strategy,
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) -> anyhow::Result<wasmtime::Config> {
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init_fuzzing();
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let mut config = wasmtime::Config::new();
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config
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.cranelift_debug_verifier(true)
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.cranelift_nan_canonicalization(true)
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.wasm_multi_value(true)
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.wasm_bulk_memory(true)
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.strategy(strategy)?;
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Ok(config)
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}
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