SPIRV-Tools/test/fuzzers/spvtools_binary_parser_fuzzer.cpp
Ryan Harrison 2d12367ced
Stop consuming input in fuzzers to select target environment (#4544)
Instead calculate a hash based on the input and use that as a seed
into random data generation for the target env.

Also fixes issue where input data was not actually being fed into
one fuzzer.

Fixes #4450
2021-10-04 13:42:12 -04:00

47 lines
1.4 KiB
C++

// Copyright (c) 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <cstdint>
#include <vector>
#include "spirv-tools/libspirv.hpp"
#include "test/fuzzers/random_generator.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size < 1) {
return 0;
}
spvtools::fuzzers::RandomGenerator random_gen(data, size);
const spv_context context = spvContextCreate(random_gen.GetTargetEnv());
if (context == nullptr) {
return 0;
}
std::vector<uint32_t> input;
input.resize(size >> 2);
size_t count = 0;
for (size_t i = 0; (i + 3) < size; i += 4) {
input[count++] = data[i] | (data[i + 1] << 8) | (data[i + 2] << 16) |
(data[i + 3]) << 24;
}
spvBinaryParse(context, nullptr, input.data(), input.size(), nullptr, nullptr,
nullptr);
spvContextDestroy(context);
return 0;
}