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jordan4ibanez
2023-11-26 01:34:57 -05:00
parent 650ccf9844
commit d5360a20a6
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source/lib/json/tests/thirdparty/Fuzzer/test/CallerCalleeTest.cpp vendored Normal file
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// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// Simple test for a fuzzer.
// Try to find the target using the indirect caller-callee pairs.
#include <cstdint>
#include <cstdlib>
#include <cstddef>
#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;
}