Add example+trophy for qs

Author: Yevgeny Pats

README.md

@@ -129,6 +129,7 @@ any unnecessary work is done.
 ## Trophies
 * [jpeg-js: OOM/DoS](https://github.com/eugeneware/jpeg-js/issues/53)
 * [@webassemblyjs/wast-parser: Crash/TypeError](https://github.com/xtuc/webassemblyjs/issues/669)
-* [decompress: Crash/TypeError ](https://github.com/kevva/decompress/issues/72) 
+* [decompress: Crash/TypeError ](https://github.com/kevva/decompress/issues/72)
+* [qs: logic bug/inequality](https://github.com/ljharb/qs/issues/340) 
 
 **Feel free to add bugs that you found with jsfuzz to this list via pull-request**

examples/qs/fuzz.js

@@ -0,0 +1,21 @@
+const qs = require('qs');
+const assert = require('assert');
+
+function isASCII(str) {
+    return /^[ -~]+$/.test(str);
+}
+
+function fuzz(buf) {
+    const str = buf.toString();
+    if (!isASCII(str)) {
+        return
+    }
+    const obj = qs.parse(str);
+    const str1 = qs.stringify(obj);
+    const obj1 = qs.parse(str1);
+    assert.deepEqual(obj, obj1);
+}
+
+module.exports = {
+    fuzz
+};

examples/qs/package-lock.json

@@ -0,0 +1,14 @@
+{
+  "name": "qs-fuzz",
+  "version": "1.0.0",
+  "description": "",
+  "main": "fuzz.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "qs": "^6.9.0"
+  }
+}