initial fuzzer support

Author: robertwayne

.gitignore

@@ -1,18 +1,22 @@
+
 .cargo
+.env
+.env.development
+.env.production
+.idea
+.log
 .turbo
+.vscode
+artifacts
 assets
 build
+bun.lockb
+Cargo.lock
+corpus
+coverage
 data
 node_modules
+pnpm-lock.yaml
 public
 target
-wip
-bun.lockb
-.env
-.env.development
-.env.production
-.log
-Cargo.lock
-pnpm-lock.yaml
-.idea
-.vscode
+wip

bufferfish-rs/Cargo.toml

@@ -1,3 +1,3 @@
 [workspace]
 resolver = "2"
-members = ["bufferfish", "bufferfish-derive", "bufferfish-internal"]
+members = ["bufferfish", "bufferfish-derive", "bufferfish-internal", "fuzz"]

bufferfish-rs/fuzz/Cargo.toml

@@ -0,0 +1,35 @@
+[package]
+name = "bufferfish-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.bufferfish]
+path = "../bufferfish"
+
+[[bin]]
+name = "bounded-bufferfish"
+path = "fuzz_targets/bounded_bufferfish.rs"
+test = false
+doc = false
+bench = false
+
+[[bin]]
+name = "string-writer"
+path = "fuzz_targets/string_writer.rs"
+test = false
+doc = false
+bench = false
+
+[[bin]]
+name = "unbounded-bufferfish"
+path = "fuzz_targets/unbounded_bufferfish.rs"
+test = false
+doc = false
+bench = false

bufferfish-rs/fuzz/fuzz_targets/bounded_bufferfish.rs

@@ -0,0 +1,15 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    let mut bf = bufferfish::Bufferfish::new();
+
+    if let Err(_) = bf.write_raw_bytes(data) {
+        return;
+    }
+
+    if let Err(_) = bf.read_u8() {
+        return;
+    }
+});

bufferfish-rs/fuzz/fuzz_targets/string_writer.rs

@@ -0,0 +1,11 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    let mut bf = bufferfish::Bufferfish::with_capacity(0);
+
+    if let Ok(s) = std::str::from_utf8(data) {
+        let _ = bf.write_string(s);
+    }
+});

bufferfish-rs/fuzz/fuzz_targets/unbounded_bufferfish.rs

@@ -0,0 +1,15 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    let mut bf = bufferfish::Bufferfish::with_capacity(0);
+
+    if let Err(_) = bf.write_raw_bytes(data) {
+        return;
+    }
+
+    if let Err(_) = bf.read_u8() {
+        return;
+    }
+});