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llvm-mirror/lib/Fuzzer/test/SimpleDictionaryTest.cpp
Matt Morehouse 8883497952 Generate error reports when a fuzz target exits.
Summary:
Implements https://github.com/google/sanitizers/issues/835.

Flush stdout before exiting in test cases.

Since the atexit hook is used for exit reports, pending prints to
stdout can be lost if they aren't flushed before calling exit().

Expect tests to have non-zero exit code if exit() is called.

Reviewers: vitalybuka, kcc

Reviewed By: kcc

Subscribers: eraman, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D35602

llvm-svn: 308669
2017-07-20 20:43:39 +00:00

31 lines
784 B
C++

// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// Simple test for a fuzzer.
// The fuzzer must find a string based on dictionary words:
// "Elvis"
// "Presley"
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <ostream>
static volatile int Zero = 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
const char *Expected = "ElvisPresley";
if (Size < strlen(Expected)) return 0;
size_t Match = 0;
for (size_t i = 0; Expected[i]; i++)
if (Expected[i] + Zero == Data[i])
Match++;
if (Match == strlen(Expected)) {
std::cout << "BINGO; Found the target, exiting\n" << std::flush;
exit(1);
}
return 0;
}