bab59a2cd2
When the test case that causes the failure can successfully be disassembled to
WAT, we get logs like this:
```
[2019-11-26T18:48:46Z INFO wasmtime_fuzzing] Wrote WAT disassembly to: /home/fitzgen/wasmtime/crates/fuzzing/target/scratch/8437-0.wat
[2019-11-26T18:48:46Z INFO wasmtime_fuzzing] If this fuzz test fails, copy `/home/fitzgen/wasmtime/crates/fuzzing/target/scratch/8437-0.wat` to `wasmtime/crates/fuzzing/tests/regressions/my-regression.wat` and add the following test to `wasmtime/crates/fuzzing/tests/regressions.rs`:
```
#[test]
fn my_fuzzing_regression_test() {
let data = wat::parse_str(
include_str!("./regressions/my-regression.wat")
).unwrap();
oracles::instantiate(data, CompilationStrategy::Auto)
}
```
```
If the test case cannot be disassembled to WAT, then we get logs like this:
```
[2019-11-26T18:48:46Z INFO wasmtime_fuzzing] Wrote Wasm test case to: /home/fitzgen/wasmtime/crates/fuzzing/target/scratch/8437-0.wasm
[2019-11-26T18:48:46Z INFO wasmtime_fuzzing] Failed to disassemble Wasm into WAT:
Bad magic number (at offset 0)
Stack backtrace:
Run with RUST_LIB_BACKTRACE=1 env variable to display a backtrace
[2019-11-26T18:48:46Z INFO wasmtime_fuzzing] If this fuzz test fails, copy `/home/fitzgen/wasmtime/crates/fuzzing/target/scratch/8437-0.wasm` to `wasmtime/crates/fuzzing/tests/regressions/my-regression.wasm` and add the following test to `wasmtime/crates/fuzzing/tests/regressions.rs`:
```
#[test]
fn my_fuzzing_regression_test() {
let data = include_bytes!("./regressions/my-regression.wasm");
oracles::instantiate(data, CompilationStrategy::Auto)
}
```
```
32 lines
690 B
TOML
32 lines
690 B
TOML
[package]
|
|
name = "wasmtime-fuzz"
|
|
version = "0.7.0"
|
|
authors = ["The Wasmtime Project Developers"]
|
|
edition = "2018"
|
|
publish = false
|
|
|
|
[package.metadata]
|
|
cargo-fuzz = true
|
|
|
|
[dependencies]
|
|
arbitrary = "0.2.0"
|
|
wasmtime-fuzzing = { path = "../crates/fuzzing", features = ["env_logger"] }
|
|
wasmtime-jit = { path = "../crates/jit" }
|
|
libfuzzer-sys = { git = "https://github.com/rust-fuzz/libfuzzer-sys.git" }
|
|
|
|
# Prevent this from interfering with workspaces
|
|
[workspace]
|
|
members = ["."]
|
|
|
|
[[bin]]
|
|
name = "compile"
|
|
path = "fuzz_targets/compile.rs"
|
|
|
|
[[bin]]
|
|
name = "instantiate"
|
|
path = "fuzz_targets/instantiate.rs"
|
|
|
|
[[bin]]
|
|
name = "instantiate_translated"
|
|
path = "fuzz_targets/instantiate_translated.rs"
|