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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
b9df8ca765
A lot of this is more boring "remove unused header", plus some other minor cleanups. I think the most significant changes were: - yaml_test_helpers.cpp is doing a switch on an unsigned int, comparing to enum values. - [bugprone-switch-missing-default-case](https://clang.llvm.org/extra/clang-tidy/checks/bugprone/switch-missing-default-case.html) is unhappy with EnumBase, but correctly identified yaml_test_helpers.cpp, so I'm opting to address it rather than disabling it even though it needs NOLINT in several locations as a result, in addition to what I think are some low-value `default` cases. I'd be fine going the other way with this too and disabling it globally (I could see it being noisier in the explorer). - MarkInitializerFor swaps the argument names between the .h and .cpp. I think the .cpp had the order as intended. - There's a new-ish [performance-enum-size](https://clang.llvm.org/extra/clang-tidy/checks/performance/enum-size.html) which I'm basically treating as "add int8_t to enums". My main motivation here is to just clean up as many of these as I can so that I stop seeing them in vscode.
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <cstring>
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#include <string>
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/raw_ostream.h"
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#include "testing/base/test_raw_ostream.h"
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#include "toolchain/driver/driver.h"
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namespace Carbon::Testing {
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static auto Read(const unsigned char*& data, size_t& size, int& output)
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-> bool {
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if (size < sizeof(output)) {
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return false;
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}
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std::memcpy(&output, data, sizeof(output));
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size -= sizeof(output);
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data += sizeof(output);
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return true;
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}
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extern "C" auto LLVMFuzzerTestOneInput(const unsigned char* data, size_t size)
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-> int {
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// First use the data to compute the number of arguments. Note that for
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// scaling reasons we don't allow 2^31 arguments, even empty ones. Simply
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// creating the vector of those won't work. We limit this to 2^20 arguments
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// total.
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int num_args;
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if (!Read(data, size, num_args) || num_args < 0 || num_args > (1 << 20)) {
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return 0;
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}
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// Now use the data to compute the length of each argument. We don't want to
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// exhaust all memory, so bound the search space to using 2^17 bytes of
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// memory for the argument text itself.
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size_t arg_length_sum = 0;
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llvm::SmallVector<int> arg_lengths(num_args);
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for (int& arg_length : arg_lengths) {
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if (!Read(data, size, arg_length) || arg_length < 0) {
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return 0;
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}
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arg_length_sum += arg_length;
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if (arg_length_sum > (1 << 17)) {
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return 0;
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}
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}
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// Ensure we have enough data for all the arguments.
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if (size < arg_length_sum) {
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return 0;
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}
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// Lastly, read the contents of each argument out of the data.
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llvm::SmallVector<llvm::StringRef> args;
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args.reserve(num_args);
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for (int arg_length : arg_lengths) {
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args.push_back(
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llvm::StringRef(reinterpret_cast<const char*>(data), arg_length));
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data += arg_length;
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size -= arg_length;
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}
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llvm::vfs::InMemoryFileSystem fs;
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TestRawOstream error_stream;
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llvm::raw_null_ostream dest;
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Driver d(fs, dest, error_stream);
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if (!d.RunCommand(args)) {
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if (error_stream.TakeStr().find("ERROR:") == std::string::npos) {
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llvm::errs() << "No error message on a failure!\n";
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return 1;
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}
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}
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return 0;
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}
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} // namespace Carbon::Testing
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