From fb8c12093aa37f5536a1a4ba341ee8bab4dabe60 Mon Sep 17 00:00:00 2001
From: practicalswift <practicalswift@users.noreply.github.com>
Date: Wed, 2 Oct 2019 11:36:08 +0000
Subject: [PATCH] tests: Add ParseScript(...) (core_io) fuzzing harness

---
 src/Makefile.test.include      |  7 +++++++
 src/test/fuzz/parse_script.cpp | 16 ++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 src/test/fuzz/parse_script.cpp

diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index d84daeaf095..a54ee21910b 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -38,6 +38,7 @@ FUZZ_TARGETS = \
   test/fuzz/partial_merkle_tree_deserialize \
   test/fuzz/partially_signed_transaction_deserialize \
   test/fuzz/prefilled_transaction_deserialize \
+  test/fuzz/parse_script \
   test/fuzz/psbt \
   test/fuzz/psbt_input_deserialize \
   test/fuzz/psbt_output_deserialize \
@@ -525,6 +526,12 @@ test_fuzz_parse_hd_keypath_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 test_fuzz_parse_hd_keypath_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
 test_fuzz_parse_hd_keypath_LDADD = $(FUZZ_SUITE_LD_COMMON)
 
+test_fuzz_parse_script_SOURCES = $(FUZZ_SUITE) test/fuzz/parse_script.cpp
+test_fuzz_parse_script_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+test_fuzz_parse_script_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
+test_fuzz_parse_script_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
+test_fuzz_parse_script_LDADD = $(FUZZ_SUITE_LD_COMMON)
+
 endif # ENABLE_FUZZ
 
 nodist_test_test_bitcoin_SOURCES = $(GENERATED_TEST_FILES)
diff --git a/src/test/fuzz/parse_script.cpp b/src/test/fuzz/parse_script.cpp
new file mode 100644
index 00000000000..21ac1aecf3a
--- /dev/null
+++ b/src/test/fuzz/parse_script.cpp
@@ -0,0 +1,16 @@
+// Copyright (c) 2009-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <core_io.h>
+#include <script/script.h>
+#include <test/fuzz/fuzz.h>
+
+void test_one_input(const std::vector<uint8_t>& buffer)
+{
+    const std::string script_string(buffer.begin(), buffer.end());
+    try {
+        (void)ParseScript(script_string);
+    } catch (const std::runtime_error&) {
+    }
+}