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🚑 added special case to fuzzers to fix #504

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Since #329, NaN and inf numbers do not yield an exception, but are
stored internally and are dumped as “null”. This commit adjusts the
fuzz testers to deal with this special case.
This commit is contained in:
Niels Lohmann 2017-03-14 21:05:38 +01:00
parent bfe4788e32
commit b026591e9e
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GPG key ID: 7F3CEA63AE251B69
4 changed files with 96 additions and 6 deletions
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4
test/src/fuzzer-parse_cbor.cpp
View file

@ -41,8 +41,8 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
// parse serialization
json j2 = json::from_cbor(vec2);
// deserializations must match
assert(j1 == j2);
// serializations must match
assert(json::to_cbor(j2) == vec2);
}
catch (const json::parse_error&)
{

20
test/src/unit-regression.cpp
View file

@ -909,4 +909,24 @@ TEST_CASE("regression tests")
CHECK(j["bool_vector"].dump() == "[false,true,false,false]");
}
SECTION("issue #504 - assertion error (OSS-Fuzz 856)")
{
std::vector<uint8_t> vec1 = {0xf9, 0xff, 0xff, 0x4a, 0x3a, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x37, 0x02, 0x38};
json j1 = json::from_cbor(vec1);
// step 2: round trip
std::vector<uint8_t> vec2 = json::to_cbor(j1);
// parse serialization
json j2 = json::from_cbor(vec2);
// NaN is dumped to "null"
CHECK(j2.is_number_float());
CHECK(std::isnan(j2.get<json::number_float_t>()));
CHECK(j2.dump() == "null");
// check if serializations match
CHECK(json::to_cbor(j2) == vec2);
}
}