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Code Issues Packages Projects Releases 10 Wiki Activity

Stop using fuzz input for filenames (#1078)

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This commit is contained in:
Jon Meow
2022-02-16 10:10:58 -08:00
committed by GitHub
parent 74c054c86e
commit 50f5b3f226
2 changed files with 2 additions and 44 deletions
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toolchain/lexer/tokenized_buffer_fuzzer.cpp
+1 -23
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@@ -16,28 +16,8 @@ namespace Carbon::Testing {
// NOLINTNEXTLINE: Match the documented fuzzer entry point declaration style.
extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data,
std::size_t size) {
// We need two bytes of data to compute a file name length.
if (size < 2) {
return 0;
}
uint16_t raw_filename_length;
std::memcpy(&raw_filename_length, data, 2);
data += 2;
size -= 2;
size_t filename_length = raw_filename_length;
// We need enough data to populate this filename length.
if (size < filename_length) {
return 0;
}
llvm::StringRef filename(reinterpret_cast<const char*>(data),
filename_length);
data += filename_length;
size -= filename_length;
// The rest of the data is the source text.
auto source = SourceBuffer::CreateFromText(
llvm::StringRef(reinterpret_cast<const char*>(data), size), filename);
llvm::StringRef(reinterpret_cast<const char*>(data), size));
auto buffer = TokenizedBuffer::Lex(source, NullDiagnosticConsumer());
if (buffer.HasErrors()) {
@@ -50,11 +30,9 @@ extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data,
// token stream.
for (TokenizedBuffer::Token token : buffer.Tokens()) {
int line_number = buffer.GetLineNumber(token);
(void)line_number;
CHECK(line_number > 0) << "Invalid line number!";
CHECK(line_number < INT_MAX) << "Invalid line number!";
int column_number = buffer.GetColumnNumber(token);
(void)column_number;
CHECK(column_number > 0) << "Invalid line number!";
CHECK(column_number < INT_MAX) << "Invalid line number!";
}