Implement a fuzz target for uncompress2 in zlib. (#2976)

1 files changed, 16 insertions, 0 deletions

diff --git a/projects/zlib/uncompress2_fuzzer.cc b/projects/zlib/uncompress2_fuzzer.cc
new file mode 100644
index 00000000..28e8d185
--- /dev/null
+++ b/projects/zlib/uncompress2_fuzzer.cc
@@ -0,0 +1,16 @@
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "zlib.h"
+
+static Bytef buffer[256 * 1024] = { 0 };
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  uLongf buffer_length = static_cast<uLongf>(sizeof(buffer));
+  uLong buf_size = static_cast<uLong>(size);
+  // Ignore return code.
+  uncompress2(buffer, &buffer_length, data, &buf_size);
+  return 0;
+}