Add fuzzer based on cargo-fuzz

docs/fuzzing.md

@@ -0,0 +1,9 @@
+# Fuzzing
+
+sqlparser uses the tool `cargo-fuzz`.  This tool can be installed using: `cargo install cargo-fuzz`.
+Cargo-fuzz also requires nightly to be installed: `rustup install nightly`
+
+Running the fuzzer is as easy as running in the `fuzz` directory:
+
+`cargo +nightly fuzz run parse_sql -- -max_len=64 -jobs=16 -timeout=1`
+

fuzz/.gitignore

@@ -0,0 +1,4 @@
+
+target
+corpus
+artifacts

fuzz/Cargo.toml

@@ -0,0 +1,26 @@
+
+[package]
+name = "sqlparser-fuzz"
+version = "0.0.0"
+authors = ["Automatically generated"]
+publish = false
+edition = "2018"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.3"
+
+[dependencies.sqlparser]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "parse_sql"
+path = "fuzz_targets/parse_sql.rs"
+test = false
+doc = false

fuzz/fuzz_targets/parse_sql.rs

@@ -0,0 +1,10 @@
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+use sqlparser::dialect::GenericDialect;
+use sqlparser::parser::Parser;
+
+fuzz_target!(|data: String| {
+    let dialect = GenericDialect {};
+
+    let _ = Parser::parse_sql(&dialect, &data);
+});