Add 'json4cpp/' from commit '9a737481aed085fd289f82dff1fa8c3c66627a7e'

git-subtree-dir: json4cpp
git-subtree-mainline: 292baed7ac0cf84263263966ed32ed113cae857f
git-subtree-split: 9a737481aed085fd289f82dff1fa8c3c66627a7e

1 files changed, 39 insertions, 0 deletions

diff --git a/json4cpp/tests/src/fuzzer-driver_afl.cpp b/json4cpp/tests/src/fuzzer-driver_afl.cpp
new file mode 100644
index 0000000000..1cde49bd8a
--- /dev/null
+++ b/json4cpp/tests/src/fuzzer-driver_afl.cpp
@@ -0,0 +1,39 @@
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.12.0
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+/*
+This file implements a driver for American Fuzzy Lop (afl-fuzz). It relies on
+an implementation of the `LLVMFuzzerTestOneInput` function which processes a
+passed byte array.
+*/
+
+#include <vector>    // for vector
+#include <cstdint>   // for uint8_t
+#include <iostream>  // for cin
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
+
+int main()
+{
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+    while (__AFL_LOOP(1000))
+    {
+#endif
+        // copy stdin to byte vector
+        std::vector<uint8_t> vec;
+        char c = 0;
+        while (std::cin.get(c))
+        {
+            vec.push_back(static_cast<uint8_t>(c));
+        }
+
+        LLVMFuzzerTestOneInput(vec.data(), vec.size());
+#ifdef __AFL_HAVE_MANUAL_CONTROL
+    }
+#endif
+}