forked from OSchip/llvm-project
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
// Simple test for a fuzzer.
|
|
// Try to find the target using the indirect caller-callee pairs.
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <cstring>
|
|
#include <iostream>
|
|
|
|
typedef void (*F)();
|
|
static F t[256];
|
|
|
|
void f34() {
|
|
std::cerr << "BINGO\n";
|
|
exit(1);
|
|
}
|
|
void f23() { t[(unsigned)'d'] = f34;}
|
|
void f12() { t[(unsigned)'c'] = f23;}
|
|
void f01() { t[(unsigned)'b'] = f12;}
|
|
void f00() {}
|
|
|
|
static F t0[256] = {
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00, f00,
|
|
};
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
|
if (Size < 4) return 0;
|
|
// Spoof the counters.
|
|
for (int i = 0; i < 200; i++) {
|
|
f23();
|
|
f12();
|
|
f01();
|
|
}
|
|
memcpy(t, t0, sizeof(t));
|
|
t[(unsigned)'a'] = f01;
|
|
t[Data[0]]();
|
|
t[Data[1]]();
|
|
t[Data[2]]();
|
|
t[Data[3]]();
|
|
return 0;
|
|
}
|
|
|