1 files changed, 45 insertions, 0 deletions
diff --git a/src/third_party/zstandard-1.4.3/zstd/tests/fuzz/simple_decompress.c b/src/third_party/zstandard-1.4.3/zstd/tests/fuzz/simple_decompress.c
new file mode 100644
index 00000000000..af3f302bb09
--- /dev/null
+++ b/src/third_party/zstandard-1.4.3/zstd/tests/fuzz/simple_decompress.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2016-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ */
+
+/**
+ * This fuzz target attempts to decompress the fuzzed data with the simple
+ * decompression function to ensure the decompressor never crashes.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "fuzz_helpers.h"
+#include "zstd.h"
+
+static ZSTD_DCtx *dctx = NULL;
+
+int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
+{
+
+    uint32_t seed = FUZZ_seed(&src, &size);
+    int i;
+    if (!dctx) {
+        dctx = ZSTD_createDCtx();
+        FUZZ_ASSERT(dctx);
+    }
+    /* Run it 10 times over 10 output sizes. Reuse the context. */
+    for (i = 0; i < 10; ++i) {
+        size_t const bufSize = FUZZ_rand32(&seed, 0, 2 * size);
+        void* rBuf = malloc(bufSize);
+        FUZZ_ASSERT(rBuf);
+        ZSTD_decompressDCtx(dctx, rBuf, bufSize, src, size);
+        free(rBuf);
+    }
+
+#ifndef STATEFUL_FUZZING
+    ZSTD_freeDCtx(dctx); dctx = NULL;
+#endif
+    return 0;
+}