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-rw-r--r--src/Makefile.test.include7
-rw-r--r--src/test/fuzz/block_header.cpp41
2 files changed, 48 insertions, 0 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index 161c925a53..46594a1a04 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -14,6 +14,7 @@ FUZZ_TARGETS = \
test/fuzz/block_deserialize \
test/fuzz/block_file_info_deserialize \
test/fuzz/block_filter_deserialize \
+ test/fuzz/block_header \
test/fuzz/block_header_and_short_txids_deserialize \
test/fuzz/blockheader_deserialize \
test/fuzz/blocklocator_deserialize \
@@ -343,6 +344,12 @@ test_fuzz_block_filter_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_block_filter_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_block_filter_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
+test_fuzz_block_header_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+test_fuzz_block_header_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
+test_fuzz_block_header_LDADD = $(FUZZ_SUITE_LD_COMMON)
+test_fuzz_block_header_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
+test_fuzz_block_header_SOURCES = $(FUZZ_SUITE) test/fuzz/block_header.cpp
+
test_fuzz_block_header_and_short_txids_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DBLOCK_HEADER_AND_SHORT_TXIDS_DESERIALIZE=1
test_fuzz_block_header_and_short_txids_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_block_header_and_short_txids_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
diff --git a/src/test/fuzz/block_header.cpp b/src/test/fuzz/block_header.cpp
new file mode 100644
index 0000000000..92dcccc0e1
--- /dev/null
+++ b/src/test/fuzz/block_header.cpp
@@ -0,0 +1,41 @@
+// Copyright (c) 2020 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 <optional.h>
+#include <primitives/block.h>
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
+#include <uint256.h>
+
+#include <cassert>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+void test_one_input(const std::vector<uint8_t>& buffer)
+{
+ FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
+ const Optional<CBlockHeader> block_header = ConsumeDeserializable<CBlockHeader>(fuzzed_data_provider);
+ if (!block_header) {
+ return;
+ }
+ {
+ const uint256 hash = block_header->GetHash();
+ static const uint256 u256_max(uint256S("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));
+ assert(hash != u256_max);
+ assert(block_header->GetBlockTime() == block_header->nTime);
+ assert(block_header->IsNull() == (block_header->nBits == 0));
+ }
+ {
+ CBlockHeader mut_block_header = *block_header;
+ mut_block_header.SetNull();
+ assert(mut_block_header.IsNull());
+ CBlock block{*block_header};
+ assert(block.GetBlockHeader().GetHash() == block_header->GetHash());
+ (void)block.ToString();
+ block.SetNull();
+ assert(block.GetBlockHeader().GetHash() == mut_block_header.GetHash());
+ }
+}