Add a fuzz target for readers

No issues so far on this one, thankfully. I'd hate to have to cut a
third release in two days.

Author: featherbread

fuzz/Cargo.toml

@@ -19,3 +19,10 @@ path = "fuzz_targets/slice_detected_all_formats.rs"
 test = false
 doc = false
 bench = false
+
+[[bin]]
+name = "reader_detected_all_formats"
+path = "fuzz_targets/reader_detected_all_formats.rs"
+test = false
+doc = false
+bench = false

fuzz/fuzz_targets/reader_detected_all_formats.rs

@@ -0,0 +1,14 @@
+#![no_main]
+
+use std::io;
+
+use libfuzzer_sys::fuzz_target;
+
+use xt::Format;
+
+fuzz_target!(|data: &[u8]| {
+	let _ = xt::translate_reader(&*data, None, Format::Json, io::sink());
+	let _ = xt::translate_reader(&*data, None, Format::Msgpack, io::sink());
+	let _ = xt::translate_reader(&*data, None, Format::Toml, io::sink());
+	let _ = xt::translate_reader(&*data, None, Format::Yaml, io::sink());
+});